Can I use this surge receptacle on a 15amp circuit?

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Old 06-18-08, 01:44 PM
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Can I use this surge receptacle on a 15amp circuit?

I am putting up a wall mount TV, in which I don't want to have to hang a traditional surge protector off it, and found a receptacle with a built in surge suppression. It says its a 20amp receptacle. The existing circuit I was going to use for power has a 15amp circuit. Will this 20amp surge protector work ok with this setup, as I assume its backwards compatible from an AMPs perspective? A link to what I am talking about is http://www.homedepot.com/webapp/wcs/...ctId=100396628
 
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Old 06-18-08, 01:52 PM
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no, don't put a 20amp on a 15 circuit

There are TVSS in 15amp. Like this: http://www.ambientweather.com/dbr2847605acs.html
 
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Old 06-18-08, 02:09 PM
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No, a T-slot 20A receptacle can only be installed on a 20A circuit. There are 15A surge suppression receptacles available though.
 
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Old 06-18-08, 02:38 PM
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Originally Posted by ibpooks View Post
No, a T-slot 20A receptacle can only be installed on a 20A circuit...
I know it's not wise to do it (homeowner plugs in AC on 20A plug, wonders why 15A breaker is tripping), but is it specifically prohibited?
 
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Old 06-18-08, 02:56 PM
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Yes, it is specifically prohibited. The receptacle amperage must match the circuit amperage.

The only three exceptions that I'm aware of are that multiple 15A receptacles are allowed on a 20A circuit (USA only, not Canada); a 50A receptacle is allowed on a 40A circuit when used for freestanding cooking range; and various amperage mismatches are allowed for specific power tools, welders and the like.
 
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Old 06-18-08, 07:54 PM
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You are allowed to install 15 amp or 20 amp duplex receptacles on a 20 amp circuit but not 20 amp on a 15.
A single receptacle would be required to match the amperage of the brach circuit.
 
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Old 06-19-08, 09:01 AM
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As nonsensical as it may be, it appears that perhaps you can have a 20A receptacle on a 15A circuit, see for example this thread, from Mike Holt's board.

After reading that I went back and looked for a prohibition, but could not find one - if anyone has a code cite for such it would be greatly appreciated.
 
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Old 06-19-08, 02:55 PM
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The code sections are 210.21 through 210.24 which cover the details of receptacles.

Yes, you could have a single receptacle on a circuit which exceeds the amperage of the, but that would only be allowed in situations where the circuit was designed for a specific piece of equipment. In practice, the only case where I can think of that making sense is for an arc welder where heavy duty 50A receptacles are installed on various sized circuits.
 
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Old 06-19-08, 07:03 PM
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Thanks IB,


It's - 210.21 Outlet Devices.
- - (B) Receptacles.
- - - (3) Receptacle Ratings. Where connected to a branch circuit supplying two or more receptacles or outlets, receptacle ratings shall conform to the values listed in Table 210.21(B)(3), or where larger than 50 amperes, the receptacle rating shall not be less than the branch-circuit rating.

 
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