Separation of Conductors 300.3

[Kobe85]

I'm wondering if, per 300.3, that I can have 480V pwr, 120V pwr, and 120V contacts in the same raceway.

I know the 480/120V pwr is ok together as long as the insullation is rated 600V, but I wasn't sure if the 120V relay contacts fell under the same boat (it would have 600V insulation as well).

Thanks.

 

[raider1]

You are correct, 300.3 permits 480 volt power, 120 volt power and a Class 1 120 volt control circuit to occupy the same raceway or enclosure provided that the voltage rating of the conductors is 600 V.

Chris

 

[don_resqcapt19]

You are correct, 300.3 permits 480 volt power, 120 volt power and a Class 1 120 volt control circuit to occupy the same raceway or enclosure provided that the voltage rating of the conductors is 600 V.

Chris

Only if the Class 1 control circuit is "functionally associated" with the power conductors that are in the raceway.

 

[iwire]

I'm wondering if, per 300.3, that I can have 480V pwr, 120V pwr, and 120V contacts in the same raceway.

I know the 480/120V pwr is ok together as long as the insullation is rated 600V, but I wasn't sure if the 120V relay contacts fell under the same boat (it would have 600V insulation as well).

Thanks.

How are you putting contacts in a raceway? Are you talking about a wireway?

 

[Kobe85]

How are you putting contacts in a raceway? Are you talking about a wireway?

Was going to use a few homerun type multi-conductor TC cables in cable tray. The 120 V contacts are running/start/stop signals for devices (i.e. Motors), and 120V ESTOP contacts

Sorry misspoke when I said raceway.