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1 vote
3 answers
14k views

Are 15A receptacles acceptable on a 20A circuit? [duplicate]

I have a 20 amp breaker for my dedicated man cave home theater. It's a rental unit. Recently I had a few loose-fitting plugs on some of the receptacles so I just went downstairs and found the breaker ...
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  • 21
0 votes
0 answers
32 views

15 amp receptacles on 20 amp circuit [duplicate]

While doing other projects I discovered that my receptacles (garage ceiling) are 15 amp rated but are on 20 amp circuit. House is 20+ years old. What does it mean? 20-year old code allowed this? ...
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  • 357
21 votes
3 answers
5k views

Why does US Code not allow a 15A single receptacle on a 20A circuit?

Living in the UK, where we have a different system of mains wiring, my curiosity was piqued by Is it okay to install a 15A outlet on a 20A dedicated circuit for a dishwasher? and its answers. Although ...
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16 votes
7 answers
133k views

Why is it safe to use 15 A receptacles on a 20 A circuit?

OK, the one answer I got was way off target, and another commenter couldn't figure out what I was asking, so I'm restating the question... Are 15A 3-prong grounded outlets actually rated to 20A, ...
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  • 13.9k
7 votes
4 answers
71k views

Can I share the neutral in 12/3 cable between two GFI circuits with different current ratings?

I think I know the answer to this question however I have been known to be wrong before! I am using GFI breakers to protect multi outlet circuits. One is 15 amp and the other is 20 amp. I realized ...
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7 votes
3 answers
45k views

20 amp Circuit, 15 amp switch that controls receptacles ok?

I have a 20 amp circuit in my home (the breaker is 20 amps). On that circuit there is a light switch rated for 15 amps that controls three 15 amp receptacles. Is the 15 amp switch ok, or should it be ...
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8 votes
3 answers
8k views

How can I find my bathroom's GFCI?

I have a half-bath on the main floor of our house that is small and has only 3 electrical items in it: Light above the sink (and corresponding light switch) Fart fan (and corresponding light switch) ...
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  • 247
2 votes
5 answers
12k views

Why are there multiple receptacles by amperage?

I could imagine the various receptacle shapes being a tool to protect you from making a mistake about what you plug in. Consider a 15A breaker with 14ga wiring to NEMA 5-15R receptacles. The circuit ...
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  • 11.5k
3 votes
3 answers
25k views

GFCI outlet shape for 20 amp vs 15 amp circuit - what does the little line on the outlet mean?

My contractor recently added a 20-Amp circuit to my kitchen while he was remodeling it. He explained that the circuit was 20-Amp, and the non-GFCI outlets he installed all have the little horizontal ...
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  • 133
6 votes
3 answers
2k views

Safe to use a 16 amp motor on a 20 amp circuit with a 15 amp outlet?

I have a 1.5 hp table saw motor rated at 115v/16amp. My garage has all 20 amp breakers but all outlets are 15 amp. Does the 15 amp outlet present a hazard if the wiring and circuit are all rated at 20 ...
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  • 275
1 vote
5 answers
8k views

Can I have a 15 amp outlet on a 20 amp circuit with a 20 amp GFCI

I'm installing a few new outlets in my unfinished basement and what I have currently is a 20 amp circuit and I have a 20 amp GFCI outlet hooked on to that. I'm looking to add another standard 15 amp ...
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  • 393
8 votes
1 answer
3k views

Using NEMA 14-50 with 60A breaker

An electrician installed a Tesla wall charger with a 60A breaker. I've added a NEMA 14-50 receptacle to the circuit behind a toggle switch (either the wall charger is powered or the plug, not both). ...
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  • 243
4 votes
1 answer
7k views

Can I do two 220V on a single line?

I am in the process of adding subpanel. This question is a continuation from my previous question. Can I do two 220V receptacles on a single 20A line? The equipments will be drawing max 3A and 13A. ...
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2 votes
3 answers
2k views

Do receptacles require a 20 ampere breaker?

I thought wall receptacles required a 20 amp breaker. Am I wrong?
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1 vote
3 answers
14k views

20 Amp Circuit with 15 Amp outlets

I added an outlet to a bathroom. When I pulled the outlet, which was a 15A, that I was going to tie into it was wired with a #12. I checked the circuit and it is a 20 AMP circuit. It was part of a ...
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0 votes
3 answers
6k views

Use of 20 Amp Breaker and 12/2 Cable for Circuit Containing 15 Amp Duplex Receptacles

What is the rationale behind using a 20 amp circuit breaker with 12/2 cable for a circuit that only contains 15 amp duplex receptacles? I understand the rationale behind using 12/2 cable instead of 14/...
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1 vote
2 answers
3k views

Will a 15A receptacle on a 20A circuit fail if I draw over 15A combined from each outlet?

OR: is the rating for the entire receptacle or each outlet individually? A common 15A receptacle has two outlets. If such a receptacle is attached to a 20A circuit, an 8A draw from each outlet will ...
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  • 8,633
0 votes
2 answers
1k views

20 amp wires into 15 amp outlet

I'm replacing a hall way outlet that only runs the hall light. I have the 15 amp outlet and the wires coming out of wall are too big to fit in holes. Guessing 20 amp? Is it ok to just wrap them around ...
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3 votes
1 answer
2k views

What size GFCI and receptacles on 20A circuit?

I am adding a string (5-6) of receptacles to an existing 20A circuit in my basement that currently has just one 15A duplex receptacle on it (with 12/2 Romex). I am planning to replace the existing ...
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  • 31
4 votes
3 answers
1k views

Can I use the tabs to chain 15A outlets on a 20A circuit?

When wiring 15A-rated outlet receptacles on a 20A circuit, is it acceptable to use the tabs & screws to chain the circuit from one outlet to the next? My instinct to overengineer says to use ...
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  • 213
4 votes
1 answer
497 views

Is this 15 amp w/2usb outlet on a 20 amp circuit against code? Does it present a fire hazard?

So the 15/20 amp circuits are confusing, from my reading you can have a 20 amp breaker with 12g wire and multiple 15 amp receptacles because the total draw of all receptacles combined might exceed 15 ...
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