Transformer

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sharan

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Panel LP! is serving a remote transformer. Does the transformer need a primary disconnect adjacent to it?
 
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.
 
sharan said:
Panel LP! is serving a remote transformer. Does the transformer need a primary disconnect adjacent to it?
Click to expand...

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.
 
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.
Click to expand...

Chris
 
sharan said:
2011 NEC.

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

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