Document DvyDLoNaN38y8MJDE5705wL7o
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1(5"N UNDERWRITERS 1 ) LABORATORIES TESTING FOR PUBLIC SAFETY
GENERAL INFORMATION .A f FROM
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MATERIALS AND HAZARDOUS LOCATION EQUIPMENT DIRECTORIES
May 1979
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SC-ELEC-07280
GENERAL INFORMATION FROM
68 ELECTRICAL CONSTRUCTION MATERIALS DIRECTORY
The Listing Mark of Underwriters Laboratories lae, on the product is the only method provided by UL to Identify product* manufactured tinder It* Ldating and Follow-Up Service. The Listing Mark for these product# include# the name and/or symbol of Underwriter# Laboratories Inc. (as Illustrated in the Introduction of this Director;) together with the word "Listed"* a control number, and the following product name: "Nonmetallic Flexible Tubing",
UNDERGROUND FEEDER AND BRANCH CIRCUIT CABLE (YDUX)
Underground feeder and branch-circuit cable is rated for u at 60* C. 09 volte and is
Listed in sites Noe. 14 to 4/0 AWG inch, copper, and Noe. 12 to 4/0 AttG mcL, alunu-
aum or eopper-clad aluminum, for single and multiple conductor cables. U is designated aa Type UF eable and is intended for use in accordance with Article 369 of the National
Electrical Code.
,, , A .
Submersible Water Pump Cabl^--Indicates a multi-conductor cable in which 2, 3, or
4 single-conductor Type UF cables are twisted together without an outer covering. The
cable is Listed in sits from 14 AWG to 2 AWG incl.. copper, and from 12 AWG to Z AWG incl., aluminum or copper-clad aluminum. The cable is tag marked "For use wuhm
the well easing for wiring deep-well water pumps where the cable is not subject to repetitive handling caused by frequent servicing of the pump unit*." The insulation may
also be surface-marked "Pump Cable."
...
,
TUs cable may employ copper, or aluminum, or copper-clad aluminum conductors.
Cables with copperclad aluminum conductors are surface printed "AL tCU-CLADl' or
"Cu-Clad Al." Cables with aluminum conductors are surface printed "AL.*
For termination information, see Guide AALZ information.
.
Cables suitable for exposure to direct rays of the sun are indicated by tag marking
and marking on the surface of the cable with the designation "Sunlight Resistant."
This cable may be terminated by using nonmetallie sheathed eable connectors {See
Nonmetallic Sheathed Cable Connectors). If single conductor Type UF eable is terminated with a fitting not specifically recog
nised for use with single conductor cable, special care should be taken to assure it is
properly secured and not subject to damage.
The Listing Mark of Underwriters Laboratories Inc. on the product Is the only method provided by UL to identify producta manufactured under its listing and Follow-Up Ser
vice. The Listing Mark for these produets includes the name and/or symbol of Under writers Laboratories Inc. (a# illustrated in the Introduction of this Directory) together
with the -word "Listed", a control number, and a produet* name. An underground feeder
cable that contains copper or eopper-elad aluminum conductor has the product name, "Un derground Feeder Cable"; aa underground feeder cable that contains aluminum conductor
has the product name, "Aluminum Underground Feeder Cable".
UNIT SUBSTATIONS (YEFR)
This listing covers unit substations intended to be Installed in accordance with the requirements of the National Electrical Code and in accordance with the installation instructions provided on the unit substation.
A4 unit substation consists of a transformer in combination with primary and/or secondary overcurrent protective devices *or switching, devices housed in a single enclosure.
Some unit substations are suitable for use as service equipment and are so marked. Such marking is part of the listing mark as noted below, or is an integral part of other required markings.
Listed unit substations are for use with copper conductors unless marked to indicate which terminals are suitable for ose with aluminum conductors. Such marking shall be independent of any marking on terminal connectors and shall be on a wiring diagram or other readily visible location. If all terminals are suitable for use with aluminum conductors, the marking will indicate "Use copper or aluminum wire." A unit substation employing terminals for main or branch circuit units individually Marked Cu-Al will be marked "Use eopperAl wire" or "Use copper wire only." The latter statement indicates that wiring space or other factors make the unit substation unsuitable for aluminum conductors.
Unless the unit substation is marked with both the sice and temperature rating of wire to be used, the termination provisions are based on the use of 0 C ampacities for wire sites Nos. 14-1 Awg and 75 C ampacities for wire Nos. 1/0 Awg and larger.
Unit substations have the secondary neutral bonded to the enclosure and have provision on the neutral for connection of a grounding conductor. A terminal is also provided on the enclosure near the line terminals for use with an equipment grounding conductor between the unit substation and the enclosure of equipment on the line side of the unit substation for use when a metallic conduit system is not provided.
Unit substations are marked for outdoor use or for indoor use. The suitability of unit substations for use on high capacity circuits has not been investigated. The Listing Mark of Underwriters Laboratories Inc. on the product is the only method pro vided by UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these products includes the name and/or symbol of Underwriters Laboratories Inc. las illustrated in the Introduction of this Directory! together with the word "Listed", a control number, and the following product name: "Unit Substation".
WIRES (ZGZX)
Insulated wire is intended for installation and use in accordance with the National Electrical Code. Unless indicated in the individual General Information sections under the various Wire Classifications, conductor sixes range from Nos. 14 Awg to 2000 MCM inclusive.
j- LOOK FOR THE LISTING MARK
Aabestos-lr Type A-
Awg inchisi\ Type A A
Sites No. 14 Type A i
through No. Type A l
volts miTicm The Lintin
the smallest symbol on tmanufscturei products incl in the Inn r<xj and the folio
i
Asbestoe-varr Type AVA-
imi'mrni Type AVU---
and impr No. 12 A Type A VL-- be*u. Wires for up type Ictu
All manufac certain n
Type AVB Wires wiih < Wires with a
The ampac conductors. ' recognised foexeept that I binding screw are recognise* able for int* connections ? intermixed cc
The Listing the smallest UL symbol or manufactured product* incl illustrated in a control nur
Fixture win Flexible Cord x
All conducts 90 C may emt
Thermopiaat care should b*
Gasoline res sidered inhere: of the wire ty
Gasoline res of extruded n> vapors at ordi on the inauljit Oil Resistant Gasoline end at 75 C.
Wire* which Type FXT i. are marked "V may use the "
Fixture wire 69 C max:
Tbermor
609 v. Chrutmr
125 v. The insulation on
GENERAL INFORMATION FROM ELECTRICAL CONSTRUCTION MATERIALS DIRECTORY
69
ASBESTOS-INSULATED (ZHNV)
wiiH are classified and rated u folio**: Type A--with asbestos insulation. 300 volte maximum, Sizes No. 14 through No. fl
Ae inclusive. copper. T/P AA--with an asbestos or glass braid and asbestos insulation, 300 volt* maximum.
Sixes No- 1* through No. 4/0 Awg inclusive, copper. Type AI--with impregnated asbestos insulation. SOO volts maximum. Sixes No. 14
through No. 8 Awg inclusive. copper. Type AtA--with an asbestos or glass braid and impregnated asbestos insulation. SOO
Tolts maximum. Sixes No. 14 Awg through 1G00MCM inclusive, copper. The Listing Mark of Underwriters Laboratories Inc. on the attached tag. the reel, or
the smallest unit container in which the produet is packaged with or without the UL symlrol on the product is the only method provided by UL to identify these products manufactured under its Listing and Follow-Up Service. The Listing Mark for these products includes the name and/or symbol of Underwriters Laboratories Inc. ias illustrated in the Introduction of this Directory) together with tbe word "Listed", a control number, and the following product name: "Aabestoe-lnsulated Wire".
ASBESTOS-VARNISHED-CLOTH (ZIBT)
A$b<"jtos-varnihed-cloth wire* are classified as follows:
Typ AVA--an asbestos or glass braid, and insulation consisting of varnished cloth and
impregnated asbestos. Sizes No. 14 Awg through 200QMCM inclusive, copper.
Type AVb--a flame-retardant cotton braid, :id insulation consisting of varnished cloth
and impregnated asbestos. Sizes No. 18 Awg through 2000MCM inclusive, copper, and
No 12 Awg through 1000MCM inclusive, aluminum or copperclad aluminum. Type aVL--a lead covering, and insulation consisting of varnished cloth and impregnated
&$bestos. Size* No. 14 Awg through 2000MCM inclusive, eopper.
Wires for use at voltages above 600 are indicated by adding numerical suffixes to the
type letters, as follows: Numerical
Maximum Working
Designation 10 20
Voltage 1000 2000
30 3000
40 4000
60 5000
All manufacturers are listed for 600*volt wires. As stated in the individual listings, certain manufacturers are also listed for wires with voltage rating up to 5000 volts.
Type AVB wire may employ copper, or aluminum, or eopper-clad aluminum conductors.
Wires with copper-clad aluminum conductors are surface printed *`AL (CU-CLAD)."
Wires with aluminum conductors shall be surface printed "AL.M
_
The ampacity of copper-clad aluminum conductors is the^ same * for aluminum
conductors. Tbe wire connectors used with copper-clad aluminum conductors shall be
recognised for use with copper and aluminum conductors and shall be marked "AL-CU,"
except that 12-10 Awg solid copper-clad aluminum conductors may be used with wire
binding screws and in pressure-plate and push-in spring-type connecting mechanisms that
are recognized for use with copper conductors. Copper-clad aluminum conductors are suit
able for intermixing with copper or aluminum conductors in terminals for splicing
connections only when the wire connectors are specifically recognised for such use. Such
intermixed connections are limited to use in dry locations.
Tbe Listing Mark of Underwriters Laboratories Inc. on the attached tag. the reel, or
the smallest unit container in which the product is packaged with or without the UL symbol on the product is the only method provided by UL to identify these products
manufactured under its Listing and Follow-Up Service. The Listing Mark for these
products includes the name and/or symbol of Underwriters Laboratories Isc. (as
Illustrated in the Introduction of this Directory) together with the word "Listed",
a control number, and the following product name: "Asbeatoa-Vamished Cloth Wire".
FIXTURE WIRE (ZIPR)
Fixture wires are rated 600 volts, or less, as shown, and comply with the Standard for
Flexible Cord and Fixture Wire of Underwriters Laboratories Inc. (UL62).
Ail conductors are copper except fixture wire having a temperature rating higher than
90 C may employ nickel,
,
Thermoplastic compounds may stiffen at temperatures below minus 10 C <14 F) and care should be used in handling at such temperatures.
Gasoline resistant wire has been tested at 30 C when immersed in gasoline. It is con
sidered inherenily resistant to gasoline vapors within the limits of the temperature rating of the wire type.
Gasoline resistant TFN or TFFN--Indicates a TFN and TFFfT conductor with a jacket
of -xtruded nylon suitable for exposure-to mineral oil, and to liquid gasoline and gasoline
vapors at ordinary ambient temperature. It is identified by tag marking and by printing
on the insulation or nylon jacket with the designation "Type TFN CTFFNi Gasoline and
Oil Resistant I" if suitable for exposure to mineral oil at 60 C or "Type TFN (TFFN)
Gasoline and Oil Resistant IF* if the compound is suitable for exposure to mineral oil at 75 C.
Wires which comply with a special vertical flame test are marked "FR-1" or "VW-l/*
Type FXT in sizes 20 nd 18 AWG which comply with an artificial weathering test
are matked "W-A." Type FXT in sizes 24-22 shall comply with the weathering test and may use the "W-A" marking.
Fixture wire* are classified as follows: 60 C maximum operating temperature. Thermoplastic-insulated wires.
600 v, 18-16 AWG awes: Type* TF. TFF. Christmas-tree- wires.
125 v. 24-18 AWG size: Type FXT*.
*The maximum voltage is 300, provided that the nominal thickness of tbe insulation on the conductor; is 2/64 in. -
-> LOOK FOR THE LISTING MARK 4--dE