-
Subject: 62
Date:
TO:
SUBJECT:
UNDERWRITERS LABORATORIES INC.
August 12, 2011
North America
Area Offices and International Inspection Centers
for:
Flexible Cords and
Cables (ZJCZ, ZJCZ7) and Electrical
Vehicle Cables (FFSO, FFSO7)
New Issue of the Follow-Up
Inspection Instructions (FUII) for
Flexible Cords and Cables(ZJCZ, ZJCZ7)
and Electrical Vehicle
Cables(FFSO,
FFSO7)
The attached
bulletin has been sent to Subscribers for the
subject category.
During
your next visit to the factory, please verify that
the Manufacturer has
received the
attached bulletin and help answer any questions
regarding when and
how to incorporate
the new issue FUII in their Follow-Up Services
Procedure.
Please also verify that the
original FUII pages are retained in the
manufacturer?s Procedure until the
new issue FUII are received.
In the event that a
manufacturer does not receive updated FUII by June
1, 2012,
the Field Representative shall
contact the transaction center to request that
these pages be provided.
This bulletin remains in effect until
December 1, 2012.
If you
have any questions regarding these instructions,
please contact the
undersigned.
Reviewed by:
Susan L. Stene
Susan L. Stene
Principal
Engineer (PDE)
Wire and Cable
Phone: 408-754-6733
E-mail:
@
John M.
Thompson
John M. Thompson
PDE Director
on@
Bruce Mahrenholz
Bruce Mahrenholz
Assistant Chief Engineer
Global Inspection and Field
Services
00-PD-J0050 - Issue 1.0
Page 1 of 4
Subject: 62
Date:
TO:
SUBJECT:
August
12, 2011
Subscribers to
UL?s Listing Service for: Flexible Cords and
Cables (ZJCZ, ZJCZ7) and Electrical
Vehicle Cables (FFSO, FFSO7)
New Issue of the Follow-Up
Inspection Instructions (FUII) for
Flexible Cords and Cables(ZJCZ, ZJCZ7)
and Electrical Vehicle
Cables(FFSO,
FFSO7)
UL has
developed a new issue of the Follow-Up Inspection
Instructions (FUII)
for Flexible Cords
and Cables (ZJCZ, ZJCZ7) and Electrical Vehicle
Cables
(FFSO, FFSO7). The new issue
Follow-Up Inspection Instructions (FUII) updates
the inspection instructions with
current practices as noted in previously
issued bulletins and incorporates the
latest revisions to UL 62, 18th Edition,
the Standard for Flexible Cords and
Cables. Therefore, except as noted
elsewhere in this bulletin, the FUII
are considered effective upon receipt as
they do not alter the FUS program
currently in effect at your facility.
The new issue of the FUII was
circulated to industry in a memo dated May 13,
2011 and all comments received were
incorporated where applicable.
The following
summarizes the changes in the FUII:
I.
General
Inspection Guidelines
a.
Removed Bulk Labeling Option from Label
section.
b.
Revised label section - Flexible Cord
requires the use of
Type L Holographic
labels, therefore machine
imprinting/computer-Generated Labels
will no longer be an
option and will be
deleted. Please refer to L2.
c.
In addition to
the Compound Recognition Program (QMTT2) and
Unlisted Component Program (QMTT3), the
Field Representative
shall also confirm
if the compound is acceptable for cords with
a ?
-
R?
suffix.
Please refer to L18.
d.
A function
check of test equipment is now required in
addition to calibration requirement.
Please refer to L26 and
L70.
II.
Manufacturer?s Test Program and
Records
a.
UL will no longer require that a UL
Inspection Data Sheet be
completed
during the inspection. In lieu of the UL
Datasheet,
Field Representatives will
confirm and witness the Manufacturer
conducting the tests specified in the
FUII and verify the data
recorded on
the manufacturer?s own in
-house Data
Sheets/Data
Recording system per
bulletin dated 4/21/2010.
b.
Added Periodic Lot testing. Please
refer to L68.
c.
Other than the individual conductors of
each cord, the
jacket on duplex and
coaxial constructions of Elevator cables
types E, EO, ETT, and ETP also shall be
subjected to the
appropriate test
potential for the specific cord or cable type
indicated in the table for
Please refer to L69 b.
Subject 62
Page 2 of 4
August 12, 2011
III.
UL Representative?s Countercheck
Program
a.
Sample selection requirement was
changed to more clearly
indicate the
number of samples and which of those samples
should be sent to UL for FUS testing.
The previous edition of
the FUII
required selecting one (1) sample for every 7,500
feet
or less of
each
type
of Flexible Cord available. This
edition
requires selecting one (1)
sample for every 7,500 feet or less
of
two types
(or one type if
only one type and one temperature
rating is available for selection) of
flexible cord available
when selected
in accordance with L33 and Table L1 (Cord Groups).
b.
Deleted
optional flame testing at factory (Vertical Flame
test
–
VW-1, FT-1
and Horizontal Flame test - FT2). Please
refer to L34 and Table L2.
(
Effective June 1 2012.
This
option was included in the FUII
but also required authorization
in the
FUS Procedure. As UL revises the FUS Procedures
to
include the revised FUIIs, this
option will be removed from any
FUS
Procedures in which it is currently included.).
c.
DC resistance
of the conductor is required for all flexible
cords and cables and Electric Vehicle
Cables based on revisions
to UL 62.
Please refer to L34, L37 and Table L2.
d.
Detailed
Examination Items shown in Table L3 were revised
to
include Tearing(integral
constructions only), Overall
Diameter(round service and heater
cords) and Manufacturer and
grade
designation of compounds used (cords using a QMTT2
or
QMTT3 compound, cords with a
–
R suffix, or cords with
specific
compounds specified in
Procedure Description only).
e.
Removed
detailed measurement description for Length of Lay
from this edition. The measurement
method for Length of Lay
shall follow
UL 2556.
f.
Corrected testing of Coiled Cords to
match UL 62. Physical
Properties Test
shall be conducted on the straight portion of
the cords instead of coiled portion.
Please refer to L60.
g.
Clarified tearing test requirement.
Please refer to L66.
IV.
Sample
Selection Instructions for Tests at UL
a.
Clarify sample
selection procedure; please refer to L71-L74
and Table L5.
b.
Added sample selection requirements for
cords
with a ?
-
R?
suffix. Please refer to Table L5, L77,
L78, L80, L81 and L82.
c.
Added FT4 flame test under annual
sample selection for those
cords marked
?FT4?.
V.
Tests at UL
a.
Changed flame
test frequency from monthly to quarterly to
incorporate the requirements in the
bulletin dated 9/22/2010.
Please refer
to Table L8.
b.
For Types CXTW and XTW, changed
Physical Properties test
frequency from
monthly to quarterly to align with Physical
Properties testing of other cord types.
Please refer to Table
L8.
c.
Added FT4
flame test, which is conducted on cables marked
?FT4?
. Please refer to Table
L8.
d.
Added test
program at UL for cords with a
?
-
R? s
uffix,
which
are shown in Table L9.
e.
Updated test
names to match UL 62.
Subject 62
Page 3 of 4
August 12, 2011
VI.
Program for Monitoring Nonconformance
with requirements
a.
Added in Enhanced Mark Integrity
Program (eMIP) requirements
from
bulletins dated 5/1/2007, 6/8/2007 and 4/1/2008.
b.
Removed
?trend? program since significant nonconformances
are covered by Enhanced Mark Integrity
Program (eMIP) and minor
nonconformances are covered by Customer
Corrective Action
Process (CCAP).
VII. Others
a.
References UL
2556 rather than UL 1581 in accordance with UL
62.
b.
Corrected name of UL 62 from Flexible
Cord and Fixture Wire
to Flexible Cords
and Cables.
c.
Removed detailed description about the
Filed
Representative?s and the
manufacturer?s general
responsibilities, whic
h are
as noted in “UL Mark Surveillance
Requirements” and is available through
UL?s secure customer
portal MyHome@
and/or through UL?s internet site
.
Manufacturers that do not have Internet access may
obtain the current version of these
requirements from their
local UL
Customer Service Representative or UL Field
Representative.
d.
Expanded scope
to cover Electric Vehicle Cables.
IMPACT OF
REVISED FUII ON MANUFACTURERS
Manufacturers who were authorized the
perform in-factory flame testing will no
longer be authorized to do so.
Holographic labels are now
required for all regions, therefore machine
imprinting will no longer be an option
and will be deleted.
A
function check of test equipment will be required.
Subject 62
Page 4 of 4
August 12, 2011
A complete copy of the new FUII pages
incorporating the changes outlined in
this bulletin, and revisions to those
FUS Procedures currently allowing the
optional flame testing at the factory,
will be issued separately by June 1,
2012. Manufacturers should retain and
continue using their existing FUII
until the new FUII are received.
Your Field Representative
can assist you with any questions regarding this
bulletin or the filing of the FUII in
your Procedure.
Any
questions concerning the above can be directed to
Susan L. Stene via phone
+408-754-6733,
or e-mail @.
Thank you for
your continued cooperation with our Follow-Up
Service Program.
Reviewed by:
Susan L. Stene
Susan L. Stene
Principal
Engineer (PDE)
Wire and Cable
John M. Thompson
John M. Thompson
PDE Director
on@
Subject 62
San Jose, CA
Issued: 2011-08-12
UL 62
FLEXIBLE CORD (ZJCZ and ZJCZ7)
ELECTRIC VEHICLE CABLES (FFSO AND
FFSO7)
FOLLOW-UP AND INSPECTION
INSTRUCTIONS
Supersedes Issue Dated October 1, 2003
COPYRIGHT
?
2011
UNDERWRITERS LABORATORIES INC
Subject 62
1
Issued: 2011-08-12
Table of
Contents
SCOPE.........................
...............................................3 <
/p>
GENERAL.................................
.....................................3
GENERAL RESPONSIBILITIES OF THE
MANUFACTURER AND THE FIELD
REPRESENTATI
VE................................................
.........3
GENERAL INSPECTION GUIDELINE
S................................................4
APPLICATION OF THE LISTING MARK TO THE
PRODUCT...................4
Purchasing
Listing
Marks.........................................4
Surface Printing, Tag Marking and
Labeling of Multi-Rated
Flexible Cord..
............................................4
Nondenominational
Labels.........................................5
Labeling of Cut
Lengths..........................................6
Surface Printing of Flexible
Cord................................6
Date Marking of
Cord.............................................7
COMPOUNDS FOR USE IN FLEXIBLE
CORD...............................7
Reprocessed Thermoplastic
Insulating/Jacketing Materials.........8
Scrapping of Flexible Cord With a
Reference to UL................9
Spark
Testing of UL Labeled
Production...........................9
FIELD REPRESENTATIVE'S COUNTERCHECK
PROGRAM.................................10
Sample Selection Requirements and
Special Inspection
Instructions........
......................................10
General......................................... ................10
Conductors..........
............................................15
Tapes, Braids, and
Wraps........................................17
Physical Properties
Tests.......................................19
Durability Test of Ink
Printing.................................20
Insulation Resistance
Tests.....................................20
Integral Construction Parallel
Cords............................21
MANUFACTURER'S TEST PROGRAM AND
RECORDS.....................................21
Manufacturers test
records......................................21
Periodic Lot testing...................
.........................21
100%
Production-Line Test
Program...............................21
SAMPLE SELECTION INSTRUCTIONS FOR TESTS
AT UL...............................22
General...........................................
..............22
Regular Quarterly and
Annual Stock Sample Selection.............23
Semi-annual Sample
Selection....................................24
Annual Stock Sample
Selection...................................25
INSTRUCTIONS FOR FOLLOW-UP TESTS AT
UL......................................26
Subject 62
2
Issued: 2011-08-12
PROGRAM
FOR MONITORING NONCONFORMANCE WITH
REQUIREMENTS.....................28
Gen
eral..............................................
...........28
Program for reconciling
significant nonconformances.............28
OEM Program............................
.........................30
Subject 62
3
Issued: 2011-08-12
SCOPE
A.
These requirements cover Flexible Cord
for use in accordance with Article
400
of the National Electrical Code as well as Types
XTW and CXTW Decorative
Cords; Clock
Cord; Heater Cord, Types HSJOW, HSJOOW and Shaver
Cord. These
requirements also cover
Flexible cords for use in Canada including Types
DRT,
PXT, PXWT, TX and CXWT. The
Standard for Flexible Cords and Cables, UL 62,
and the Standard for Wire and Cable
Test Methods, UL 2556, are applicable for
inspections in this category. The
Authorization Page for the Procedure will
note authorization for use of the
Canadian UL Mark on Flexible Cord production
accordingly. The descriptive sections
of the Procedure will identify the
Canadian Types authorized for the
manufacturer, and their corresponding UL
Type Designations if products meet both
Canadian and U.S. requirements, or the
Canadian Types authorized for the
manufacturer for products that meet only
Canadian Requirements. The Procedure
will contain instructions that cover the
generic marking, labeling and test
requirements for such cords.
These instructions do not cover
Hoistway Cable that is also identified in
UL 62. Follow-Up Inspection
requirements for Hoistway Cable are defined in the
respective Follow-Up and Inspection
Instructions and/or Follow-Up Service
Procedures for this category. For
specific Flexible Cord types covered by this
FUII, refer to Table L1.
GENERAL
B. As a
part of Underwriters Laboratories Inc. (UL's)
follow-up inspection, it
is required
that a Field Representative periodically visit the
factory and
select, for test or
examination or both, samples of production made
since the
last inspection visit of the
products covered.
C. The
Follow-Up Service Procedure covering the product
is loaned to the
manufacturer and
constitutes the basis on which the product is
judged for
compliance with the
applicable requirements.
GENERAL RESPONSIBILITIES OF THE
MANUFACTURER AND THE FIELD REPRESENTATIVE
The Manufacturer?s and
Field Representative?s
general
responsibilities, as
part of the
Follow-Up Services Procedure, are as noted in the
published
document title
d,
“UL Mark Surveillance Requirements”, and is
available through
UL?s secure customer
portal MyHome@ and/or through UL?s internet site
. Manufacturers that do not have
Internet access may obtain the
current
version of these requirements from their local UL
Customer Service
Representative or UL
Field Representative.
Products in question shall be removed
from service by segregation or prominent
labeling and marking.
Subject 62
4
Issued: 2011-08-12
GENERAL INSPECTION GUIDELINES
APPLICATION OF THE LISTING
MARK TO THE PRODUCT
General
L1. If available, the Field
Representative shall examine a minimum of ten
coils or reels of Flexible Cord to
assure that the application of the label to
the product throughout is in compliance
with the requirements of Underwriters
Laboratories Inc.
L2. Flexible Cord is covered under UL's
Type L Listing Service and requires
the
use of Type L holographic labels whose contents
are identified in the
Section General
of the Follow-Up Service Procedure. Additional
information,
such as camera-ready art
work and proportional dimensions for the
Marks/Markings may be found by visiting
UL?s website at
“/marks_labels/”.
L3. The
Listee's name, tradename, trademark or UL File
Number which identifies
the Listee,
must appear on a combination label, unless the
subscriber chooses
to purchase standard
labels from UL's Label Centers, in which case the
Listee's identification is not
applicable. At least one label shall be applied
to the tag furnished with each coil or
reel of Flexible Cord. The footage
represented by the label or labels
shall in each case be approximately the
same as the number of feet of Flexible
Cord, within ±5 percent. The Field
Representative shall verify
manufacturers records or markings to confirm
footage.
L4.
Each flexible cord shall have a durable
distinctive marking throughout its
entire length by means of which the
Listee can be identified. This shall be
accomplished by one or more of the
following methods:
1.
assigned
combination of colored marker threads.
2.
assigned file
number, or
3.
organization name or acceptable coding
such as by trade name, trademark
L5. The above identification methods
are listed in order of precedence; i.e.
if the descriptive marking includes
both a marker thread and a file number,
the marker thread shall be used to
identify the responsible organization.
Purchasing Listing Marks
L6. Type L holographic
Listing Marks for flexible cords are available in
standard format containing only UL
Listing Mark information at UL?s Label
Centers, or they may be ordered as
combination labels to also include the
Listee identification. Additional
information on designing and ordering custom
holographic labels can be found in the
Hologram UL Marks section of UL?s Marks
and labels website at
“/marks_labels/”.
Surface Printing, Tag Marking and
Labeling of Multi-Rated Flexible Cord
Subject 62
5
Issued: 2011-08-12
L7.
Flexible Cord that is dual rated with a Recognized
Component AWM style
(e.g.:
carton, and only the UL Logo in the
surface print legend.
L8. The UL Logo shall consist of the
letters
parentheses. For multi-rated
constructions, UL requires that the UL Logo in
the surface print legend clearly
associate the
types, and clearly
separate the Listed cord types from the AWM
designations.
Examples of proper
markings are shown below:
...SPT-
2 (UL) …………………
AWM...
... (UL) SPT-2 18
AWG/2 C 300 V or AWM...
The
tag marking for dual-rated cord shall account for
all common and unique
requirements for
each cord type identified in the cord's surface
print. As an
example, for cord
identified as
marking requirements for
these two types would include the Listee's
identification, conductor size, number
of conductors, temperature rating,
voltage rating and date of manufacture.
The unique tag markings would be
applicable to the AWM category and
would include such items as the insulation
thickness and the usage statement.
L9. Since the construction
in the above example references one Listed cord
type and one Recognized wire type, a UL
Listing Mark is applied to the tag. In
this case, a Flexible Cord Listing Mark
is applied to the tag.
L10.
If the Field
Representative encounters marking practices not in
accordance with the above guidelines,
the situation shall be documented on a
Variation Notice. The Field
Representative shall work with the manufacturer in
accordance with the “VN Handling and
Processing Procedure”. Should it be
determined that the cord or cable is no
longer eligible to bear the UL
Certification Mark, all cord or cable
with surface printing referencing UL
shall be scrapped in accordance with
L24.
Nondenominational
Labels
L11.
Nondenominational labels that do not
contain a denomination (length) are
available for Flexible Cords. When
nondenominational labels are used, the
Field Representative shall verify that
the manufacturer is maintaining
accurate records of Flexible Cord
produced bearing nondenominational labels
during each calendar month. The Field
Representative shall have access to
these records in order to determine and
report nondenominational label usage.
L12.
The use of
nondenominational labels is an option made
available only to
those manufacturers
whose production recording methods and controls
have been
evaluated by UL, and found to
be an acceptable basis for service charge
billing. The use of nondenominational
labels is not required, and labels with
the footage imprinted will continue to
be available. When nondenominational
labels are authorized for a
manufacturer, the authorization will be indicated
in the Follow-Up Service Procedure and
on the Subscriber Card (Account, Class
and Code Section). Use of
nondenominational labels may be revoked if proper
controls and reporting are not
maintained.
Subject 62
6
Issued: 2011-08-12
L13.
The Field
Representative shall inform manufacturers
interested in having
their record
keeping facilities evaluated toward receiving
authorization to
use nondenominational
labels to contact the Label Center.
Labeling of Cut Lengths
L14.
Flexible
Cord produced in-house and packaged in cut lengths
by the
manufacturer is labeled
differently from Flexible Cord which is received
on
reels from another Flexible Cord
manufacturer and then cut into lengths by the
receiving manufacturer. The procedure
indicated below shall be followed when
labeling Flexible Cord which the
manufacturer produces in-house and ships in
cut lengths:
a.
Place the
Flexible Cord label covering the total footage of
cut
lengths on the outside of the
carton of cut lengths. The label shall
be so located so that the label is torn
when the carton is opened.
b.
Prepare the
usual engineering tag and place it inside the
carton of
cut lengths. The information
required on the tag can be found under
the
c.
At the
location on the tag normally occupied by the
Flexible Cord
label, use the statement
As an
alternative to preparing the tag for cut lengths
mentioned in
paragraph L14b, the
manufacturer may print the required tag
information onto
the carton itself. The
Flexible Cord label shall then be placed on the
outside
of the carton (see L14a),
adjacent to the tag information, in a location
where
the label will be torn when the
carton is opened.
L15.
Flexible
Cord that is received from another manufacturer
with the
intention of being cut into
lengths or respooled and labeled by the receiving
manufacturer shall already bear the UL
Flexible Cord label. Manufacturers who
receive Listed Flexible Cord from
another manufacturer and cut it into lengths
for resale as Listed Flexible Cord
shall use Listed Processed Wire or
Processed Wire Respooled labels, as
authorized by their Processed Wire
Follow-
Up Service Procedure.
Surface Printing of
Flexible Cord
L16.
In addition
to the surface printing requirements specified in
the
Logo in the surface
print legend. For products meeting only U.S.
Requirements,
the letters
required to appear in the surface print
legend. For products meeting only
Canadian Requirements, the letters
is required to appear in the legend.
For products meeting both U.S. and
Canadian Requirements, either the
C(UL)US Logo or separate U.S. and Canadian
logos are required to appear in the
legend. For example:
E12345
(UL) SJT 14 AWG (2.08 mm2)/2C 105C 300V VW-1 C(UL)
or
Subject 62
7
Issued: 2011-08-12
E12345 C(UL)US SJT 14 AWG(2.08 mm2)/2C
105C 300V VW-1
are
acceptable markings for products meeting both US
and Canadian
requirements.
Date Marking of Cord
L17.
The age of
the cord is derived from the marked date of
manufacture, and
is either applied to
the tag, reel or carton or included in the surface
markings of the cable through the use
of ink, indent, or embossed surface
print marked on the outside surface of
the product as permitted in the
Standard for Flexible Cords and Cables,
UL 62. The date code shall follow the
“month and year” or month, day and
year” sequence (e.g. “10/02”, “Oct. 02”,
“10/31/02” or “Oct. 31, 02”, etc.). If
the date code is printed on the surface
of the cord, it shall be repeated at
intervals of no greater than 40 inches (1
meter). The date may be shown in code.
In no case shall the marked date be
previous to the date of the 100%
Production-Line testing (See Paragraph L67)
of the cable.
COMPOUNDS FOR USE IN FLEXIBLE CORD
L18.
Specific compounds shall be used as
insulating materials used in
Decorative
Cords and Wire, types SPT-1W, SPT-2W, CXTW and XTW
as well as
jacketing compounds for
a
nd cord types with “W” in the type
designation. All
other constructions
not bearing the
based, and are not
subject to the requirements of the Recognized
Component
QMTT2 and QMTT3 Programs
described below. Cords bea
ring the
“
-
R” suffix such
as type SPT-2-R or SJT-R shall have the
insulation and jacket compound
procedure described. The compound does
not need to be covered under either
QMTT2 or QMTT3 unless the cord type
also contains the ?W? suffix.
Recognition Program (QMTT2)
- Under the Recognition Program for Compounds
(QMTT2), the manufacturer purchases
Recognized compounds from an outside
supplier that are Recognized under the
QMTT2 category. To confirm if a
compound is acceptable for the
applicable cable rating(s), the Field
Representative is to reference the
Online Certifications Directory to confirm
that the compound exists and is
suitable for the specific type ratings.
Products not employing a Recognized
compound, if required by the Procedure,
shall be held, and a Variation Notice
shall be written to document the
situation.
Unlisted Component Program (QMTT3) -
Under the Unlisted Component Program,
manufacturers have been granted
authorization to formulate their own
compounds. To verify if a compound is
acceptable, the Field Representative
shall reference a separate volume under
the manufacturer's Follow-Up Service
Procedure for Flexible Cord or a
separate file/volume that has been issued to
the manufacturer under the CCN
Procedure described. Cords not
manufactured using the unlisted component
compound described in the Procedure
shall be held and a Variation Notice shall
be written to document the situation
Subject 62
8
Issued: 2011-08-12
Procedure-described compounds - The
compound used on cord
s marked with a
“
-
R”
suffix (such
as SPT-2-
R) is procedure described.
Cords with a “
-
R” suffix
that
are not manufactured using the
compound described in the Procedure shall be
held and a Variation Notice shall be
written to document the situation.
Reprocessed
Thermoplastic Insulating/Jacketing Materials
L19.
Bleeder stock is insulating or
jacketing material that has already been
processed through an extruder at least
once. Bleeder stock used for
insulating or jacketing cable shall not
contain any copper or other conductive
materials. Paragraphs a - c describe
the only forms of bleeder stock
reprocessing currently authorized by
Underwriters Laboratories Inc. It should
be noted that reprocessed thermoplastic
material shall not exceed twenty five
percent (25%) by weight of the material
being fed into the hopper, and shall
be
thoroughly mixed with the virgin material. Use of
up to 50% reprocessed
compound by
weight, for cable jackets for general applications
only (reference
paragraph ?c? below) is
permitted only
if authorized in the
Follow-Up Service
Procedure.
a.
stock obtained from the
manufacturer's own production, that is
granulated while still hot at the
extruder and then immediately put
back
into the hopper of the extruder. Compounds
reprocessed in this
manner are
acceptable for any use for which the original
compound is
authorized.
b.
and
allowed to cool is acceptable for any use for
which the original
compound is
authorized, provided the bleeder stock is
segregated by
compound and continuously
identifiable until reused.
c.
Insulation
stripped from cables is acceptable for use only as
a
jacketing compound on cable in which
the jacket is non-integral and
where no
specific performance requirements are specified
for the
jacket (such as
resistant
-
R”
suffix,
etc.). Jackets employing
reprocessed compound are intended for use
only where generic requirements are
specified for the jacket.
L20.
Paragraphs a
- c above apply only to thermoplastic
insulating/jacketing
materials.
Underwriters Laboratories Inc. does not authorize
the reprocessing
of either
thermoplastic elastomers (TPE) or of pure
thermosets.
L21.
Please
not
e that this applies to both
“in
-
house” reprocessed
compounds,
and compounds that are
reclaimed insulation and jacket material (herein
defined as “reclaimed” compounds) sent
to external reclaiming companies (or
sister facilities that perform this
service).
L22.
Manufacturers are required to request
authorization for both the use of
reprocessed compound in the range of 25
to 50% by weight, and for reclaiming
operations not conducted at the
original manufacturing location for the
reclaimed products. Special
instru
ctions placed in the Subscriber?s
Follow
-Up
Subject 62
9
Issued: 2011-08-12
Service
Procedure will authorize the use of the
reprocessed compound and/or
the
reclaiming operation.
L23.
Manufacturers utilizing both in-house
reprocessed and reclaimed
compounds
must specify the ratio of virgin and reprocessed
compounds on their
production records,
reel tags, or other corresponding production data.
In
addition, reprocessed and reclaimed
compounds of a particular temperature
rating (e.g., “PVC
90
?
C”) must be
noted. For both types, manufacturers
mu
st
specify in their
production specifications the mixture ratio and
temperature
rating(s). Suppliers of
pre-mixed reclaimed/virgin compounds must specify
this
same information as part of their
shipping documentation.
Scrapping of Flexible Cord With a
Reference to UL
L24.
The
following defines the various means that UL
considers acceptable in
order to render
rejected, surface printed Flexible Cord unusable:
a.
Cord cut into short lengths [maximum 10
ft. (3 m)]. These lengths
are not to be
disposed of in neat bundles, but rather, they are
to
be disposed of by means that will
cause entanglement of the short
lengths.
b.
Cord,
including coils, severely compressed or compacted.
c.
Insulation stripped from the conductor.
d.
Cord of various constructions randomly
assembled and bailed. It is
intended
that all cord be removed from cartons or reels and
all ties
removed. The turns of cord
must be sufficiently separated in the
container to cause complete
entanglement of the cord and thus
destroy the integrity of the original
coil.
e.
Cord of various constructions processed
as in
and sent to a reclaimer.
Employing this method, the manufacturer
must maintain his own and copies of his
reclaimer's scrap weight
records for
examination by the Field Representative.
f.
Pouring printing ink on rejected coils,
reels and lengths of cable
soaking the
cable surface and thereby obliterating any
reference to
UL, then hardening and
binding the scrap cables to each other,
making the cable unusable.
L25.
If the Field
Representative encounters an alternate scrapping
method
being employed by the
manufacturer which is not authorized in the
Follow-Up
Service Procedure, the Field
Representative shall document the situation on a
Variation Notice and request that the
manufacturer contact the Responsible
Office within 15 days, to have the
alternate method evaluated and, if found
acceptable, included in the Procedure.
Spark Testing
of UL Labeled Production
L26.
Since UL 62
requires Spark Testing as a condition for
labeling, Field
Representatives are
required to review the manufacturer's Spark
Testing
Subject 62
10
Issued: 2011-08-12
equipment and testing procedure during
each inspection to determine compliance
with the requirements specified in the
UL 62. Review of the equipment shall
include a review of calibration records
and function check documentation. The
misuse of Spark Testing equipment and
procedures has been seen to consist of
one or more of the following items:
a.
Voltage below
that required.
b.
Sparking not
done at the last operation before twisting,
jacketing,
packaging, or reeling for
shipment.
c.
Spark testers not switched on by the
operator for any reason.
d.
Spark testers
in poor operating condition, those that have not
been
calibrated for voltage and
sensitivity since installation in excess
of one year.
e.
Insufficient
bead-chain spacing or missing sections of bead-
chains.
f.
Conductors of insulated wire not
grounded at either their take-up or
pay-off reel.
g.
Visible/audible signals for detecting
nonconformances not operating.
h.
Function check
not performed on a periodic basis
i.
Records of
function check not maintained
j.
Other details
not in compliance with UL requirements.
L27.
Manufacturers are required to maintain
in good condition, adequate and
sufficient facilities and equipment for
conducting the required tests. Should
the Field Representative question the
suitability of the Spark Testing
equipment or testing procedure, the
situation is to be documented on a
Variation Notice and the Field
Representative will be within his/her authority
to withhold labeling of the product
until the manufacturer institutes
corrective action.
FIELD
REPRESENTATIVE'S COUNTERCHECK PROGRAM
Sample Selection Requirements and
Special Inspection Instructions
General
L28.
At each
visit to the factory the Field Representative
shall be allowed to
see all Flexible
Cord that bears or is intended to bear the Listing
Mark, and
shall then select
representative samples.
L29.
The Follow-
Up Service Procedure specifies the type or types
of Flexible
Cord on which the use of
Listing Marks (labels) has been authorized. The
Field
Representative shall assure that
type designations currently being UL labeled
Subject 62
11
Issued: 2011-08-12
at the
factory, or submitted for UL inspection, are
authorized in the Follow-
Up Service
Procedure.
L30.
The Field Representative shall examine
labeled production and all
production
intended to be labeled for all of the construction
details,
dimensions, ratings and
markings specified in UL 62, the Follow-Up Service
Procedure description, these Follow-Up
and Inspection Instructions, the
Standard for Wire and Cable Test
Methods, UL 2556(see also Table L4), and
shall witness the tests specified in
Table L2.
L31.
The Field Representative is required to
inspect and report upon randomly
selected samples. These samples shall
not be taken from a lot which other
samples have been taken during a
previous inspection, unless the lot was
previously rejected, has been culled
(sorted) and reworked, and is resubmitted
for reinspection. The actual number of
coils to be taken in individual cases
may necessarily vary somewhat according
to conditions, but the Field
Representative shall follow the outline
given in Table L4 and the instructions
in the paragraphs that follow the
table.
L32.
The number of samples selected by the
Field Representative shall be
proportional to the amount of Flexible
Cord available for inspection. Select
one (1) sample for every 7,500 ft.
(2.286 km) or less of two types (or one
type if only one type and one
temperature rating is available for selection)
of Flexible Cord available when
selected in accordance with L33 and Table L1.
A minimum of three (3) samples shall be
selected per type at each visit, but
the maximum number of initial samples
selected per type shall not exceed nine
(9). Each sample shall be selected from
a different coil or reel.
L33.
The grouping
of cord types is shown in Table L1. If available,
the Field
Representative shall select
samples from different groups. If samples within
one group are selected, samples of
different temperature rating and options
(oil, weather resistant) shall be
selected.
Table
L1
Cord Groups
Group
Cord type
General construction
1.
SV, SVO,
SVOO, SJ, SJO, SJOO, SJOW,
Jacketed,
thermoset
SJOOW, S, SO, SOO, SOW, SOOW,
SRD, EV,
cord
EVJ, HSJO,
HSJOW, HSJOO, HSJOOW, HSJ,
SV-R, SVO-R,
SVOO-R, SJ-R, SJO-R, SJOO-
R, SJOW-R,
SJOOW-R,
2.
SVE,
SVEO, SVEOO, SJE, SJEO, SJEOO,
Jacketed,
SJEW, SJEOW,
SJEOOW, SE, SEO, SEOO, SEW,
thermoplastic
SEOW, SEOOW,
EVE, EVJE, SVT(TPE),
elastomer cord
SVTO(TPE), SVTOO(TPE), SJT(TPE),
SJTO(TPE), SJTOO(TPE), SJTW(TPE),
SJTOW(TPE), SJTOOW(TPE), ST(TPE),
STO(TPE), STOO(TPE), STW(TPE),
STOW(TPE), STOOW(TPE), SRDE, DRT,
EVT(TPE)
SVE-R,
SVEO-R, SVEOO-R, SJE-R,
SJEO-R,
SJEOO-R, SJEW-R, SJEOW-R,
SJEOOW-R,
3.
SVT, SVTO,
SVTOO, SJT, SJTO, SJTOO,
Jacketed,
SJTW, SJTOW, SJTOOW, ST, STO, STOO,
STW,
thermoplastic cord
Subject 62
12
Issued: 2011-08-12
STOW,
STOOW, SRDT, EVT, EVJT, SVT-R,
SVTO-R,
SVTOO-R, SJT-R, SJTO-R, SJTOO-R,
SJTW-R, SJTOW-R, SJTOOW-R
4.
TST, TPT,
Shaver cord
5.
SPT-1, SPT-1W, SPT-2, SPT-2W, SPT-3,
SRDT, clock, PXT, PXWT, XTW
6.
SPE-1, SPE-2,
SPE-3, SPT-1(TPE), SPT-
2(TPE),
SPT-3(TPE), SRDE
7.
SP-1, SP-2, SP-3, SRD, HPN, HPN-R
8.
NISPT-1, NISPT-2, NISPT-1-R, NISPT-2-R,
9.
NISP-1, NISP-2, NISP-1-R, NISP-2-R
10. NISPE-1, NISPE-2, NISPT-1(TPE),
NISPT-
2(TPE), NISPE-1-R, NISPE-2-R,
11. TX, CXWT, CXTW,
12. C,
PD, HPD
13. E, EO, ETT, ETP
Tinsel cords
Thermoplastic,
parallel cord
Thermoplastic
elastomer, parallel
cord
Thermoset, parallel
cord
Thermoplastic,
nonintegral
parallel
cord
Thermoset,
nonintegral
parallel cord
Thermoplastic
elastomer,
nonintegral
parallel cord
Thermoplastic, single
conductor or twisted
Thermoset, single
conductor
or twisted
Elevator cables
L34.
Samples selected for examination shall
not be less than 15 ft. (4.6 m) in
length. Table L2 specifies the
tests/examinations to be witnessed by the Field
Representative. For the Detailed
Examination, the items shown in Table L3 are
to be reviewed, where applicable. Use
Table L4 as a guide for acceptance or
rejection of a lot based on examination
results.
L35.
If all of the samples examined show
acceptable results, the entire lot is
acceptable with respect to that item.
If any sample is nonconforming,
additional samples from different coils
or reels shall be selected in
accordance with Table L4 and inspected.
The lot as a whole may be accepted or
rejected in accordance with Table L4.
For lots accepted, coils or reels from
which acceptable results were obtained
may be labeled as being acceptable.
Reference is to be made to paragraphs
L62 and L63 that provides additional
instructions regarding how a physical
properties nonconformance is to be
treated. The manufacturer may then
make a thorough review of the rejected
lot(s) and reject all individual coils
or reels which do not comply with the
requirements, after which the remainder
of the lot(s) may be submitted for
inspection and if found to be
acceptable by the Field Representative, labeled.
L36.
The Field Representative shall note
that all tests shown in Table L2 may
not be applicable for the given
Flexible Cord under inspection. The Field
Representative shall reference the
Construction Tables that appear in UL 62,
which define the construction and test
performance requirements for each
Flexible Cord type. The list of tests
shown in Table L2 shall be compared
against the Construction Table for the
Flexible Cord type under inspection to
determine which tests in Table L2 are
applicable. As an example, if a Type
SJT Flexible Cord was selected for
inspection then tests 1
–
8
and 11 of Table
L2 are applicable.
Test 9 (Tightness of Insulation) and Test 10
(Flexibility
of Braid) do not appear in
the Construction Table for Type SJT. The Field
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