service to barn

[bth0mas20]

I will be installing a 200a service single phase to a barn. Thier is a 6x6 pole in the middle of a field that has a 200a meter installed on it with a 100a main breaker panel mounted to the other side. This panel feeds three other buildings from branch circuits. I will be replacing the 200a meter with a 350a double lug base. The barn is 120ft away from the pole. Do I have to install a 200a ocpd on the pole and then feed the barn with 3 wire and ground or can I Just install it as a service with only 2 ungrounded and a grounded.

This has went different ways in my past depending on the inspector that I got.

 

[ohm]

I will be installing a 200a service single phase to a barn. Thier is a 6x6 pole in the middle of a field that has a 200a meter installed on it with a 100a main breaker panel mounted to the other side. This panel feeds three other buildings from branch circuits. I will be replacing the 200a meter with a 350a double lug base. The barn is 120ft away from the pole. Do I have to install a 200a ocpd on the pole and then feed the barn with 3 wire and ground or can I Just install it as a service with only 2 ungrounded and a grounded.

This has went different ways in my past depending on the inspector that I got.

Farms now require a "site isolation device" per 547.9 (A) (10) and 547.9 (E). The POCO may also require one (top of pole). I believe feeds to the individual barns may be treated like a service drop to a house (going off a picture in Analysis of 2008 Changes).

If you open the site isolation device you cut off all power to the facility. You must identify it with a label.

 

[fireryan]

I dont have my code book here right now but i think per 2008 it has to be a 4 wire