Thanks Charlie... that gives us something to sink our teeth into:
Single and duplex receptacles rated 15 and 20 A that are provided with more than one set of terminals for the connection of line and neutral conductors have
not been investigated to feed branch-circuit conductors connected to other outlets on a multi-outlet branch circuit, as follows:
- Side wire (binding screw) terminal with its associated back wire (screw actuated clamp type) terminal
- Multiple conductors under a single binding screw
- Multiple conductors in a single back wire hole
That leads me to infer that there is nothing to prohibit using the back
stab and sidewire at the same time. Wouldn't do it myself, but appears that it is legit.
This has been stated a number of times in various threads as an "it appears that they don't make the #12/14 combos any more", but I don't believe anyone had substantiated it with UL documentation previously:
Screwless terminal connectors of the conductor push-in type (also known as "push-in-terminals") are restricted to 15 A branch circuits and are for connection with 14 AWG solid copper wire only. They are not intended for use with aluminum or copper-clad aluminum wire, 14 AWG stranded copper wire, or 12 AWG solid or stranded copper wire.
Anyone know/have documentation of when exactly this changed?
I guess there is one more I'm really curious about -- there must be something in UL 498 that states that a 15A receptacle must withstand a 20A load, otherwise NEC could not arbitrarily allow a 15A recep on a 20A circuit. I'd just like to see the actual wording... no idea why I am fixated on this.:smile:
