Is there a practical use for a 30-amp, 1-pole breaker in a residence?

[tonype]

Unfortunately, the breaker was not indexed in the home so I do not have any idea what is services. Service is ca. the 1960's

 

[augie47]

125v RV Receptacle ?

 

[tonype]

125v RV Receptacle ?

Nothing visible outside

 

[tonype]

From my research, these are very rare and seem to be more likely in commercial or industrial areas

 

[rc/retired]

125v RV Receptacle ?

I wired one for a friend a few months ago. After that, I'm not sure we can give the OP a reasonable answer.

Ron

 

[jap]

Maybe a well pump, or, an incorrectly wired 30 amp 120v subpanel hidden somewhere.

JAP>

 

[hbiss]

Possibly a 125V window A/C.

-Hal

 

[drcampbell]

Stairway ice-melting system?

What size wire is connected to it? (if any)

Turn it off and see what happens.

 

[LarryFine]

Mayhaps it replaced a 15a or 20a breaker that was tripping because it should have.

 

[jap]

Mayhaps it replaced a 15a or 20a breaker that was tripping because it should have.

Quit being so logical Larrry.

JAP>

 

[PaulMmn]

Early electric stove? Incorrectly wired clothes dryer?
How about half-wiring an electric water heater?

 

[infinity]

Point of use water heater under a sink.

 

[petersonra]

it is not a code violation nor is it inherently unsafe so I would not worry all that much about it.

 

[Sberry]

I found one yesterday,,, nothing on it.

 

[retirede]

I have a 120V, 20 gallon water heater that has a 2500 watt element. Its branch circuit is #10 on a 25A breaker, but there’s no reason it couldn’t have been put on a 30.

 

[Joethemechanic]

When I was a kid we had a 30 amp circuit that ran overhead to two outbuildings. Each one with their own single 15 amp circuit

 

[LarryFine]

Quit being so logical Larrry.

 

[readydave8]

Seen a lot in panels that replaced old fise boxes, installers would match fuse size in existing

 

[synchro]

If the circuit went to a garage, there's a chance it was for a welder that accepts a 120V input such as small inverter welders for MIG or TIG, etc..

 

[rc/retired]

If the circuit went to a garage, there's a chance it was for a welder that accepts a 120V input such as small inverter welders for MIG or TIG, etc..

Agree. I've wired a mig welder for a friend a couple of times.

Ron