Emergency Disconnect

[Dalton1989]

A friend built a 32' by 32' woodshop on the property of his single family dwelling. He and Utilities agreed to splice off the existing service conductors feeding the transformer near his house and install an additional transformer near his new woodshod. Then he wants a 200A service solely for the woodshop. Can anyone say whether or not this new service, which will only serve his new woodshop, needs the emergency disconnect on the outside of the building?

 

[Dennis Alwon]

If you go by the wording in the book then I would say it is not required because the section only pertains to one and two family dwellings. I would check with your local authority as they may require the workshop to have an emergency disconnect because it is on the property of a single family dwelling, but that is not what the code states.

 

[paullmullen]

Insert caveats about local code modifications to NEC and AHJs and the Utility rules and on and on.

 

[infinity]

It's simply not required. The wording in 230.85 is clear in that it states dwelling units.

230.85 Emergency Disconnects.
For one- and two-family dwelling units,

Dwelling Unit.
A single unit, providing complete and independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation. (CMP-2)

 

[Dalton1989]

Thank you fellas. It's what I concluded, but it's always very reassuring to hear other people are in agreement. Much appreciated

 

[david]

It's simply not required. The wording in 230.85 is clear in that it states dwelling units.

Yes just don't supply a hot tub from that service panel, Lol

 

[infinity]

Yes just don't supply a hot tub from that service panel, Lol

Hot tub?

 

[david]

Hot tub?

680.41 "shall not apply to one family dwellings"

Everyone agrees the rules for dwellings do not apply as the OP asked because it's not a dwelling even though it's on a dwelling premise.

I was not being serious when I posted.
But the logic isn't always that clear cut.

 

[david]

680.41 "shall not apply to one family dwellings"

Everyone agrees the rules for dwellings do not apply as the OP asked because it's not a dwelling even though it's on a dwelling premise.

I was not being serious when I posted.
But the logic isn't always that clear cut.

I just inspected what the utility calls a re,-meter inspection before they will energized an existing service. It's a 200 amp pole service 2017 nec . It is now associated with a single family dwelling premise.

A mobile home was removed and now he has parked an RV by that pole. 200 amp service supplying one 30 amp single pole and one 30 amp RV receptacle.
Say it was under 2020 nec emergency disconnect or not, gfci protection for the rec or not. Just not always that clear cut.

The pole service is for the dwelling premise but not for the dwelling, the rec is on the dwelling premise but not from the dwelling service

 

[jap]

The wood shop may not need an emergency disconnect, but, it will still need a means of disconnect at or near the closest point of entry to the service, or, feeder conductors.

Seeing as how there's surely going to be more than 6 throws of the hand needed to kill all the circuits needed to service the shop, that's going to bring you back to a single disconnect, either on the outside or very close to the inside, so, call it what you want.

Jap>

 

[david]

Can anyone say whether or not this new service, which will only serve his new woodshop, needs the emergency disconnect on the outside of the building?

From a Google search your under the international residential code. One and two family dwellings, townhouses and accessory sructors. I mentioned 680.41 to make the point that a hot tub supplied from your work shop service would be on the single family dwelling premise, the text in 680.41 says that the emergency disconnect (,e stop) for the hot tub does not apply to one family dwellings. So the intent would be a hot tub for use of a single family dwelling would not have to be provided with an E- stop

Very similar language for the emergency disconnect for the service you asked about. If we use the same logic and decide the hot tub does not need an E- stop than the emergency disconnect you're asking about would be required.

If we flip it around and say the E-stop is required than the emergency disconnect for the wood shop service would not be required.

Dennis gave the advice to ask your authority. I made the statement that it's not always that clear cut.
What is the intent of the NEC and in your location the intent of the IRC

 

[infinity]

Dennis gave the advice to ask your authority. I made the statement that it's not always that clear cut.
What is the intent of the NEC and in your location the intent of the IRC

There is no arguing that (barring a local amendment) the NEC does not require an emergency disconnect for a wood shop. The code wording is very clear on this one.

 

[david]

There is no arguing that (barring a local amendment) the NEC does not require an emergency disconnect for a wood shop. The code wording is very clear on this one.

I not disagreeing, how about hings outside being supplied by the workshop service, does that all follow the single family dwelling rules. Logic says that things outside should, but what does the text say.
In the example of a hot tub being supplied by some other service, from a detached garage, pole service, or something like a work shop. The text says single family dwelling, logic says if the outside is also the premise of a single family dwelling than the rules for a dwelling should be followed