UL Standard for Safety Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors
|Publication Date:||7 May 2009|
These requirements apply to pressure type equipment wiring terminals intended for use with appliances or equipment with either copper, aluminum, or copper-clad aluminum wire in accordance with the National Electrical Code, NFPA 70. The terminals may be constructed so that they are also acceptable for use with any wire.
These requirements apply to field wired equipment wiring terminals which are an integral part of the equipment, or are intended for use in specific equipment.
These requirements cover ampere-rated equipment wiring terminals, horsepower rated terminals and wire range rated terminals, intended for use in appliances and equipment and that comply with the requirements for such appliances and equipment.
These requirements cover terminal-type wire connectors intended for use with No. 12 AWG (3.3 mm2) or larger aluminum or copper-clad aluminum wire, and for No. 30 AWG (0.05 mm2) or larger copper wire. Current ratings are based on the ampacity of insulated conductors rated 75°C or 90°C in accordance with the connector rating and not exceeding the maximum current rating - if provided - of the wiring terminal. For equipment wiring terminals intended for use with stranded conductors, the following conductor strand configurations are intended:
Aluminum - Class B concentric, compressed, and unidirectional lay compact.
Copper - Class B concentric and compressed, Class C concentric.
Copper-Clad Aluminum - Class B concentric.
Other class and strand configurations may also be covered as indicated by marking.
These requirements also cover connectors additionally rated for No. 2 AWG (33.6 mm2) and larger compact-stranded copper conductors. These connectors are identified in accordance with 15.9A. See also 4.1 and the Exception to 8.2.6(b)(3).
These requirements also cover connectors of the types specified in 1.3 intended for use with metric conductors that have cross sectional area within the range of the rated AWG/kcmil conductors. For example, a connector rated for 6 AWG - 250 kcmil may additionally be rated for 16 - 120 mm2. See 7.1.13, 126.96.36.199, 15.20, and 15.21.
These requirements do not cover insulated connectors, binding-screw terminals, built-in terminal connectors on devices rated under 30 amperes and intended for outlet-box mounting or having provision for strain relief, or built-in terminal connectors on devices having integral cable clamps.
A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.