FAQ
67
be used with aluminum, copper, and copper-clad 
aluminum conductors.
(3) Receptacles installed using screwless terminals of the 
conductor push-in type construction (also known as push-in-
terminals) shall be installed on not greater than 15-ampere 
branch circuits and shall be connected with 14 AWG solid 
copper wire only unless listed and marked for other types 
of conductors.
Informational Note: See UL 498, Attachment Plugs and 
Receptacles, for information regarding screwless terminals of 
various type constructions employed on receptacles. Screwless 
terminals of the separable-terminal assembly, spring-action clamp, 
and insulation-displacement type constructions are not classied 
in UL 498 as screwless terminals of the conductor push-in type 
construction (also known as push-in terminals).
Expert Analysis 
New text has been added to address the installation of 
snap switches and receptacles with push-in terminal 
terminations. This new subsection clarifies that wiring 
devices rated 15 and 20 amperes are suitable for 
installation with copper and copper-clad aluminum as 
provided in the UL guide information. Terminals marked 
CO/ALR are suitable to be used with copper, aluminum, 
and copper-clad aluminum conductors. Snap switches 
connected using screwless terminals of the conductor 
push-in type construction (also known as conductor 
push-in terminals) shall be installed on not greater than 
15-ampere branch circuits and shall be connected with 
14 AWG solid copper wire only unless listed and marked 
for other types of conductors.
Material taken from the National Electric Code
®
 is reprinted with permission 
from NFPA 70
®
, 2023 edition. National Electrical Code
®
, Copyright 2022, 
National Fire Protection Association, Quincy, MA. All rights reserved.
NEC
®
 Text 
Revision
404.16(A)(B)(C)(D) Reconditioned 
Equipment - Switches/Dimmers 
Leviton Comment: Article 404.16(A)(B)(C)(D) is 
covered with Article 240.2 on page 53.
Revision
406.2 Reconditioned Equipment – 
Receptacles, Plugs and Connectors 
Leviton Comment: Article 406.2 is covered with Article 
240.2 on page 53.










