NEC True or False Question: Receptacles

[jar546]

True or False:
Receptacles rated at 20 amperes or less and designed for the direct connection of aluminum conductors must be marked CO/ALR, and if they are not CO/ALR type, they can be connected to an aluminum branch-circuit conductor using a copper pigtail with a wire connector

 

[steveray]

false

 

[fatboy]

False

 

[wwhitney]

True, if the wire connector is rated for copper and aluminum together (which is its own story). The UL guide for receptacles (RTDV) says in part:

"Terminals of 15 and 20 A receptacles not marked ‘‘CO/ALR’’ are for use with copper and copper-clad aluminum conductors only. Terminals marked ‘‘CO/ALR’’ are for use with aluminum, copper and copper-clad aluminum conductors."

But this is more of a UL guide quiz than an NEC quiz.

Cheers, Wayne

 

[jar546]

Yes, you can use a pigtail as asked in the question.

 

[steveray]

I think I misread that as "any" wire connector....a connector approved for Cu/ Al like an Alumiconn would be my preferred method...