Electrical Wiring in the Home/Electrical Outlet in Garage
I have a detached garage with a fuse box that has two wires from the house going to it. The 15 amp circuit in the box then serves two ceiling lights and then what appear to be two single power outlets, all served by two wires. The flexible metal conduit is exposed so I can see where they are all going, however, have not opened up the back boxes of the outlets. I would love to know, however, what kind of outlets these are and if I can change them out. The attached picture shows the two outlets, the top one i have an adapter in it that goes from a two prong outlet to three prong/grounded plug. The outlet viewed in the bottom shows the four prongs, oriented vertically, and there are two round items that are just the screws holding the outlet in place, if it's not clear). I have used that adapter to get power from the outlet twice in the last five years (once for a hedgetrimmer and once for a refrigerator for 10 mins) and it works. Can you tell me what this outlet is and if there is a way to make it usable? Thank you.
There was a time in the development of home electrical systems before there were agreed upon standards. Many different utilities popped up and they product oddly shaped plugs. The good thing is the nation moved to a system that is universal across every state. What a pain it would be if that did not happen. All you need to do is have the outlet changed out to a modern outlet. You should consider having the garage rewired too. It looks like it is time.
If you do update that outlet could you save it and mail it to me? I'm trying to put together a collection of historical devices before they disappeared in to history. The one you have is really cool looking. My guess is that it is a plug meant to work with 3 different type of electrical systems. Sort of like a combo Beta/VHS VCR or 8 track with cassette.
a) Parallel-- the plugs we use today.
b) Tandem-- Two prongs that laid flat.
C) Diangle round-- I have not seen That before.
Gen 3 electric
1257 s 26th street
Philadelphia Pa 19146
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