Transformer

[sharan]

Panel LP! is serving a remote transformer. Does the transformer need a primary disconnect adjacent to it?

 

[augie47]

If it's in the same building, no.
A lockable means on a remote disconnect may be required depending on which Code cycle is in use.

 

[jumper]

Panel LP! is serving a remote transformer. Does the transformer need a primary disconnect adjacent to it?

Not necessarily. 2011 NEC

450.14 Disconnecting Means. Transformers, other than
Class 2 or Class 3 transformers, shall have a disconnecting
means located either in sight of the transformer or in
a remote location. Where located in a remote location,
the disconnecting means shall be lockable, and the location
shall be field marked on the transformer.

Gus was quicker than me.

 

[raider1]

I agree with Gus, what code cycle are you working under?

2011 NEC section 450.14 now requires a disconnecting means for transformers.

Here is what that section says;

450.14 Disconnecting Means. Transformers, other than
Class 2 or Class 3 transformers, shall have a disconnecting
means located either in sight of the transformer or in
a remote location. Where located in a remote location,
the disconnecting means shall be lockable, and the location
shall be field marked on the transformer.

Chris

 

[sharan]

2011 NEC.

Panel and transformer are in the same building but different floors.

 

[infinity]

2011 NEC.

Panel and transformer are in the same building but different floors.

Then it's your choice, lockable disconnect at the origin of the feeder and a sign or a disconnect at the transformer.

 

[sharan]

Thank you all.