Can anybody help me identify this type of receptacle? I have looked online but cant find anything. Home is from 1958 in North Carolina.
Looks like a NEMA 10-20R.
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Looks like Robert has the correct answer.
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Thank you for the reply. Yes, it does looks like a 10-20R. Any recommendations on if or how it should be commented on in my report?
I wouldn’t comment on it in the report unless I saw a problem with it.
I would verbally inform my client that they could have an electrician convert it to a standard 120 receptacle if they wanted too.
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A little odd for a residential installation. May have powered medical equipment? or some special purpose installation? (250v)
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Thank you for your input. This helps me explain the matter to the client since they will likely be unable to use the receptacle for typical appliances.
I have seen them used to plug in big window mounted air conditioners.
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was it located near a window ???
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Yes, but the home has central heat and air. It was located in the dining room.
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most likely for old window style cooling unit no longer in use…
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We had one of those 240V 20A window units back in the 70s, and it was also in the dining room. After we got central air I ended up converting the 240V into a standard 120V receptacle.
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they could push out a lot of cold air…
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Morning, George. Hope this post finds you well.
As always, thank you for the illustration.
Would it be proper to refer to this receptacle as a Duplex NEMA 10-20R receptacle?
Your socket design predates NEMA, was made by Hubbell, and is described here:
This old socket be removed by the owner, sent to a museum. The wiring behind is likely fine, and can be used with a new socket.
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The voltage rating of that receptacle was changed, it used to be 20A 250V, it was changed to 20A 125/250V, it is obsolete but had been used on 240V appliances in the past, the receptacles in Australia, & New Zealand use that design. Last one I came across was in the kitchen of a nursing home that I think was installed in a 1968 remodel, needed a 20A 120V circuit for a freezer & the wiring was able to accommodate that since they had supplied a unused neutral.
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Yes, but I probably wouldn’t ever be that specific in a home inspection report. I would refer to it as a duplex receptacle and leave it at that.
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