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UL 486C Document Information:
Title
UL Standard for Safety Splicing Wire Connectors
Underwriters Laboratories Inc.
Publication Date:
Sep 7, 2004
Scope:
This Standard applies to hand- or tool-applied splicing wire and
cable connectors intended for use with all alloys of copper or
aluminum conductors, or both, in accordance with the Canadian
Electrical Code Part I, C22.1, in Canada, the National
Electrical Code, NFPA-70, in the United States of America, or
the Standard for Electrical Installations, NOM-001-SEDE,
in Mexico, as follows:
connectors intended to hold two or more conductor(s);
connectors intended for use in appliances and equipment that
comply with the requirements for such appliances and equipment;
connectors intended for use with 6 AWG (13.3 mm2) or
smaller conductors; and
uninsulated connectors that are used in circuits rated 8 000 V
and less.
Note: Examples of splicing wire connectors include twist-on
connectors, insulation-piercing or displacement connectors,
spring-action connectors, tool-applied crimp, mechanical set-screw
connectors, etc.
This Standard is intended for splicing wire connectors suitable
for use with conductors in the size ranges as follows:
Aluminum:
12 AWG (3.3 mm2) and 10 AWG (5.3 mm2)
solid; and
12 AWG (3.3 mm2) to 6 AWG (13.3 mm2)
stranded, Class B concentric, compressed, and unidirectional lay
compact.
In México, the use of aluminum conductors is permitted only with
thermoset insulation and for sizes of 6 AWG (13.3 mm2) and
higher.
Copper:
30 AWG (0.05 mm2) to 10 AWG (5.3 mm2)
solid; and
30 AWG (0.05 mm2) to 6 AWG (13.3 mm2)
stranded, Class B concentric and compressed, and Class C
concentric.
Compact-stranded copper conductors:
In Canada and Mexico, for 8 AWG (8.4 mm2) and 6 AWG
(13.3 mm2).
In the United States this is not applicable.
Rigid (solid and stranded) metric wire falling within the ranges
of the above AWG sizes.
Note: For example, a connector rated for 6 AWG (13.3
mm2) – 14 AWG (2.1 mm2) may be
additionally rated for 10 – 2.5 mm2.
Other class and strand configurations as indicated by
marking.
These requirements cover splicing wire connectors intended
for:
copper-to-copper;
aluminum-to-aluminum;
copper-to-aluminum conductor combinations intended for
intermixing of conductors and dry locations only; or
all of the above.
This Standard is intended for splicing wire connectors suitable
for currents not exceeding the ampacity of insulated conductors
rated 75 °C or 90 °C, in accordance with the rating of the
connector.
This Standard does not apply to:
splicing wire connectors intended for direct burial;
insulated splicing wire connectors intended for use at voltage
levels in excess of 600 V [1 000 V in a sign or luminaire];
terminal wire connectors;
wire binding screw terminals;
built-in terminal connectors on devices rated less than 30 A and
intended for outlet box mounting or having provision for stress
relief;
built-in terminal connectors on devices having integral cable
clamps;
flat quick connect terminals; and
soldering lugs.
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