Seperate building Disconnect

[Sierrasparky]

Hey,
does anyone know when it was required that A seperate building required a main disconnect. And also when it was required to be treated as service
ie: when did it require a ground rod and or cold water ground?

Thanks

 

[Dennis Alwon]

Hey,
does anyone know when it was required that A seperate building required a main disconnect. And also when it was required to be treated as service
ie: when did it require a ground rod and or cold water ground?

Thanks

A separate structure always requires a disonnect. It also requires ground rods and 4 wires to the building unless you are not under the 08 code or you run a single MWBC. In this case no ground rod is required but a disco is required. It could be just a simple dp switch.

Look at art. 225.30 and 250.32 I believe

 

[Sierrasparky]

A separate structure always requires a disonnect. It also requires ground rods and 4 wires to the building unless you are not under the 08 code or you run a single MWBC. In this case no ground rod is required but a disco is required. It could be just a simple dp switch.

Look at art. 225.30 and 250.32 I believe

I ran a emergency call this morning and found a Lug and knife of a Disco fried on one leg.
The nuetral was not bonded to the can, This was probably about 10+ years old install. So I bet we were on the 95 or so code. don't remeber exactly what version was in place at that time. Cailf is about 3 years behind the current.

 

[Dennis Alwon]

I ran a emergency call this morning and found a Lug and knife of a Disco fried on one leg.
The nuetral was not bonded to the can, This was probably about 10+ years old install. So I bet we were on the 95 or so code. don't remeber exactly what version was in place at that time. Cailf is about 3 years behind the current.

If this was a 3 wire install and a feeder wired back in '95 then, I believe, the neutral should have been bonded to the can. If this was a simple MWBC then the ground would have been separate.

 

[bjdm829@fuse.net]

detached garage

detached garage

would a disc. sw. be required for a detached garage if installing 1 branch circuit in a dwelling unit.

 

[iwire]

would a disc. sw. be required for a detached garage if installing 1 branch circuit in a dwelling unit.

Yes, but see the exception to 225.36 and the exception to 225.38.

Basically a single pole switch can be the disconnecting means in that detached garage.