But a 15A rated receptacle is rated for no more than 15A - meaning it is guaranteed to remain undamaged provided no more than 15A of continuous current is drawn though it; there is no guarantee at 20, 19, 18, 17 or even 16 amps. In fact a 15A branch circuit should be designed with the goal of not exceeding 80% of 15A (12 amps) for safety reasons.

2020年6月25日 · The garage has one 15A outlet, a few lights, and two garage doors. I want to plug in a treadmill into the garage. The treadmill has a NEMA 5-20P plug on it and has a label that says it draws 18 amps at 120 V. Is it safe to replace the 15A outlet with a 20A (NEMA 5-20R) outlet and plug the treadmill into it?

2016年9月10日 · While I know for certain that the use 20A circuits to supply residential multiwire circuits is common convention and a requirement for some outlets in kitchens, laundry rooms, and bathrooms (sections from 210.11 of the 2014 NEC quoted below), I cannot seem to find a section in the NEC which prohibits the use of 15A circuits to supply multiple ...

2017年4月17日 · To get a UL listing for a 15A receptacle, the maker must rate it for 20A of pass-through. (pass-through is where you use the two screws on the receptacle to continue a circuit, rather than pigtailing.) The purpose of this rule is to make it legal and safe to do exactly what you are doing. So, yes. It will be fine.

A 15A circuit is limited to 15A from all sockets and hardwired loads on the circuit. A 20A circuit is limited to 20 amps, ditto ditto. Appliances which are continuous loads must be treated as 125% of their actual load, so a 12A appliance must be treated as 15A. This is the same derate as the 80% derate most people talk about.

2018年3月14日 · Mirroring that, there is a UL requirement that all 15A receptacles must have an internal capacity of 20A - only the socket itself is 15A. All the wire in a 20A circuit must be 12 AWG or larger. (Table 310.15(B)(16)). If any of the wire is 14 AWG, then it is a 15A circuit with the wrong breaker on it. 12 AWG wire will not fit in the "backstabs ...

2017年4月27日 · The current outlet is labeled 15A 120V. I grabbed a new outlet from Home Depot at 15A 125V and wired it up exactly as the original was. After all was said and done, there was no power coming from the outlet, My guess is that there …

2018年6月5日 · Temporarily swap the wires in the panel between two adjacent 15A breakers. If the problem stays with the breaker, then the breaker is definitely the problem. If the problem stays on the same circuit, then the problem is NOT in the …

2020年10月21日 · However, if a GFCI is an outlet, it must follow NEC's outlet rules. If a 120V outlet has a T-slot, it's a 20A one and can be used on 20A circuit only. If the older 20A CFGI doesn't have T-slot, it can be used on 15A or 20A circuit.

2022年10月21日 · To summarize, if you're controlling a receptacle then 404.14(F) requires you to use a 20A switch on a 20A circuit even if it's a 15A receptacle. For devices that are wired directly to the switch you can probably work under 404.14(A) and use a …