Separately derived systems????

[Jerseydaze]

I am looking at a little help on this I have a customer who currently owns a garage and a body shop two separate buildings two separate meters and services customer is selling garage business but wants to keep his office in garage building but meter it from body shop meter .office will need at most 2 20 amp 110V circuits for a window ac some general outlets and a florescent fixture .So my thousht are to simply run the circuits over head from building to building as UF. I am unsure if I need a separate disconnect or panel in the garage/office building any help please.

 

[Karl H]

Just a question. How will you install this UF Cable and be compliant

with 340.10 and not violating 340.12?

 

[Pierre C Belarge]

It sounds like you are trying to install a second supply to the building. Take a look at 230.2 and Art 225.

 

[Jerseydaze]

It sounds like you are trying to install a second supply to the building. Take a look at 230.2 and Art 225.

There must be an exception to this rule I see buildings in Jersey all the time with more then one service.im from the ressy world so go easy on me.

 

[chris kennedy]

.im from the ressy world so go easy on me.

Ok...............

Separately Derived System. A premises wiring system whose power is derived from a source of electric energy or equipment other than a service. Such systems have no direct electrical connection, including a solidly connected grounded circuit conductor, to supply conductors originating in another system.

 

[Pierre C Belarge]

There must be an exception to this rule I see buildings in Jersey all the time with more then one service.im from the ressy world so go easy on me.

Or closed eyes, misunderstanding of rules.
Regardless, it still does not sound to me as per your post that this would be a compliant installation.

 

[Jerseydaze]

Ok...............

I stand corrected

 

[Jerseydaze]

Or closed eyes, misunderstanding of rules.
Regardless, it still does not sound to me as per your post that this would be a compliant installation.

Ok so currently the building has 100 amp oh service in order to seperately meter the new office I would have to take that service down and do a larger service new mast duplex pan new panel? If I understand i cant just send a new mast with a new single pan on the same building .

 

[Pierre C Belarge]

I do not know all of Jersy's more restrictive codes, including the POCO.
The NEC would permit you to have up to 6 sets of service entrance conductors off of 1 service drop. Our local POCO will permit 2 sets, with special permission to install more.
As per your last post, I would think you may be able to do just that, add a second set of service entrance conductors off of the same drop, leaving the existing in place. I would make sure your POCO approves this before you install it.

 

[LarryFine]

If I understand i cant just send a new mast with a new single pan on the same building .

You can if the two services have different characteristics, such as voltage or phases.

 

[charlietuna]

your customers best method would be to install an E-mon power meter and sign an agreement with the new garage building owner to allow him to pay back his share of the power. They are ANSI-2C rated and cost around $600. plus the cost for you to re-route the circuits thru it.......

 

[Karl H]

your customers best method would be to install an E-mon power meter and sign an agreement with the new garage building owner to allow him to pay back his share of the power. They are ANSI-2C rated and cost around $600. plus the cost for you to re-route the circuits thru it.......

I would check with POCO before doing that. I just recently "Heard",

I have not confirmed it yet. That using a E-Mon Demon to sub-meter

is "Selling Power" and against POCO rules. In my area anyways. Once again

I just "Heard" this recently and have yet to confirm . I'd check with your

POCO first.