Power to a Separate building

[don_resqcapt19]

I believe the panel you're thinking of, in the detached building, would be classified as a subpanel, and would not require a "main breaker," although having one might not be a bad idea. whether the subpanel is required or not (one feeder/branch circuit vs multiple feeders/branch circuits) is a different question.

First there is no such thing as a "subpanel" in the NEC, and second a second building fed by a feeder or branch circuit needs a means of disconnect at the second building. 225.31
It would not require a "main breaker" it will require a means of disconnect, and where you are installing a panel at the second building, a main breaker is probably the easiest and most cost effective means of providing the disconnect.

 

[jap]

Hmmm,,

What if we are not actually installing a feeder or a branch circuit to the separate building or structure to "serve the separate building or structure".

Maybe we are simply installing 2 branch circuits to 2 receptacle outlets located inside of the separate building or structure to "serve the RV" ?





JAP>

 

[LarryFine]

 

[electrofelon]

Hmmm,,

What if we are not actually installing a feeder or a branch circuit to the separate building or structure to "serve the separate building or structure".

Maybe we are simply installing 2 branch circuits to 2 receptacle outlets located inside of the separate building or structure to "serve the RV" ?





JAP>

The OP wasn't super clear on the layout, but I agree with you if the RV receptacle isn't serving the building.

 

[retirede]

The OP wasn't super clear on the layout, but I agree with you if the RV receptacle isn't serving the building.

What does “serve the building” mean?
Can I run 3 circuits to my detached garage if I say one serves my EVSE, one my table saw, and the other my dust collector?

 

[petersonra]

What does “serve the building” mean?
Can I run 3 circuits to my detached garage if I say one serves my EVSE, one my table saw, and the other my dust collector?

I think you can make a good argument that a circuit that is outside and serves only to recharge an EV is not "serving the building".

A similar argument can be reasonably made for an RV outlet that is outside of the garage.

Realistically though, these kinds of things should probably be codified. It makes no sense to me to require a complete rewiring of an existing electrical system to bring in power for an EV charger. Make a special rule for those that allows for a circuit to be tapped off the service just for the EV.

 

[jap]

i just stuck that out there due to the whole "it says what it says and not what it doesn't say",,,,

The branch circuits the OP is installing would be serving the RV not the structure.

Otherwise you would think the rule for the structure would mention servicing the stuff in, on, or around the structure.

Probably not.

JAP>

 

[retirede]

I think you can make a good argument that a circuit that is outside and serves only to recharge an EV is not "serving the building".

A similar argument can be reasonably made for an RV outlet that is outside of the garage.

Realistically though, these kinds of things should probably be codified. It makes no sense to me to require a complete rewiring of an existing electrical system to bring in power for an EV charger. Make a special rule for those that allows for a circuit to be tapped off the service just for the EV.

When did “outside” come into play? It wasn’t in the original question.

 

[jap]

When did “outside” come into play? It wasn’t in the original question.

The RV being parked "inside" the outside metal building was never in the original question either.

JAP>

 

[tortuga]

Can you run a 50A 240V circuit for an RV and a 120V circuit for lighting to a seperate Metal Building or are you reguired to run a feeder for sub panel.

I have done it, the customer had a old wood shed that had a 15A GFCI and light in it, RV was frying the GFCI, they had a bizarre series of adapters and cords to the RV.
I ran a 50A RV circuit and mounted it on the exterior of the shed.
The PVC conduit and wire for the RV receptacle never enters the shed, and if anyone complains I could just mount it on a 4X4 post next to the shed.
Figured it was more secure on the shed.

I seriously considered just doing a main lug 4 circuit panel, the reasons I did not were
1) Working space, the wood shed gets completely stacked full of fire wood during the summer, then all around the outside.
2) I did not want to to drive two ground rods, the house GES was not far away.
3) Would have taken allot more time to touch the 15A circuit.
4) Would have had to run a 60A feeder (225.39).

 

[retirede]

The RV being parked "inside" the outside metal building was never in the original question either.

JAP>

Presumption was that when he says he’s running power to a building for an RV, it’s so the RV can be parked in the building. I guess it doesn’t have to be, that seems to make the most sense to me.

 

[jap]

Presumption was that when he says he’s running power to a building for an RV, it’s so the RV can be parked in the building. I guess it doesn’t have to be, that seems to make the most sense to me.

I agree.

Some are also simply RV shelters with a top and open sides.

Not sure by what information we have.

JAP>

 

[AC\DC]

I have done it, the customer had a old wood shed that had a 15A GFCI and light in it, RV was frying the GFCI, they had a bizarre series of adapters and cords to the RV.
I ran a 50A RV circuit and mounted it on the exterior of the shed.
The PVC conduit and wire for the RV receptacle never enters the shed, and if anyone complains I could just mount it on a 4X4 post next to the shed.
Figured it was more secure on the shed.

I seriously considered just doing a main lug 4 circuit panel, the reasons I did not were
1) Working space, the wood shed gets completely stacked full of fire wood during the summer, then all around the outside.
2) I did not want to to drive two ground rods, the house GES was not far away.
3) Would have taken allot more time to touch the 15A circuit.
4) Would have had to run a 60A feeder (225.39).

Number 4 only applies to the disconnect not the ampacity of the conductors just to clear that up.