Transformer Clearance

[trallio]

I have two outdoor oil filled transformers. Both have 13.8KV primaries.
One has a 4160V secondary, the other has a 480V secondary. They are 750KVA & 2500KVA.

Is there a minimum spacing requirement between these transformers?

Is there a requirement for a fire wall or similar?

 

[benaround]

Trallio,

This would be a POCO issue and not found in the NEC.

 

[steve66]

They aren't necessarily POCO transformers. If that is the case, the NEC would apply. As far as spacing goes, I think you have to follow the manufacturer's instructions.

I doubt you need a fire wall, but I do remember seeing something that if it is oil filled, you need to consider the possible effects of flammable oil blocking an exit - or something like that.

If the transformer is away from the building, probably not a problem.

Steve

 

[jim dungar]

This is a building (fire) code or insurance carrier requirement not an NEC issue.

 

[bdarnell]

Trallio:

Check 450.27