transformer

[david]

110.58 Disconnecting Means.
A switch or circuit breaker that simultaneously opens all ungrounded conductors of the circuit shall be installed within sight of each transformer or motor location for disconnecting the transformer or motor. The switch or circuit breaker for a transformer shall have an ampere rating not less than the ampacity of the transformer supply conductors. The switch or circuit breaker for a motor shall comply with the applicable requirements of Article 430.

I herd that a transformer does not need a disconnect how does this fit into that?

 

[iwire]

Re: transformer

Originally posted by david:
110.58 ...........................I herd that a transformer does not need a disconnect how does this fit into that?

110.58 only applies to tunnel installations over 600 Volts.

 

[pierre]

Re: transformer

Conductor protection requirements are in Art 240, Transformer protection requirements are in Art 450.

 

[neal]

Re: transformer

Hi 110.58 falls under IV tunnel installations over 600 volts,nominal Is this transformer in a tunnel? Neal