Yes, as long as you use 600V rated wire.I am wiring a actuator valve that has 480Vac power and 120vac control wiring. I was wondering if I could wire them through the same conduit.
Yes, as long as you use 600V rated wire.
Welcome to the forum :thumbsup:
Good point.Maybe not. ...
Yes.Would a class 2 or 3 circuit ever be 120 volts?
It seems not just the same circuit, but the entire load side of the power source... because you have to eliminate the Class 2 or 3 marking on the supply equipment.And just to chime in one more detail: If you choose to redesignate a class 2 or 3 circuit as class one and use Chapter 3 wiring methods to make use of this allowance, you are not permitted to continue to treat any other portion of the same circuit as class 2 or 3 and use those lesser methods there. It is an all or nothing decision.
Yes.
A easily recognized example is a 480V motor starter with a 480V-120V Class 2 control transformer.
IDK... perhaps limited energy. Definition doesn't say it won't shock.How could a Class 2 or Class 3-120 volt circuit provide acceptable protection from electric shock as required by 725.2?
FWIW, the definition of a Class 1 circuit says the portion of the wiring system from OCD or power-limited source and note thereto refers to 725.41.I will have to think about for awhile....
Done, I will tentatively agree with you on that.
Yes.
A easily recognized example is a 480V motor starter with a 480V-120V Class 2 control transformer.
How could a Class 2 or Class 3-120 volt circuit provide acceptable protection from electric shock as required by 725.2?
IDK... perhaps limited energy. Definition doesn't say it won't shock.
Yes.
A easily recognized example is a 480V motor starter with a 480V-120V Class 2 control transformer.
And the source would still need to deliver necessary inrush current for the contactor coil, so that means inrush would have to be no more than 5 mA.It would have to be a very very small starter coil...the current on a Class 2 circuit at 120 volts is limited to a maximum of 0.005 amps. See Chapter 9, Tables 10 and 11.
I agree it doesn't say it won't shock, but have a hard time believing that at 120 volts, it won't have dangerous shock hazards if it has enough capacity to operate just about any NEMA design motor starter contactor.
It would have to be a very very small starter coil...the current on a Class 2 circuit at 120 volts is limited to a maximum of 0.005 amps. See Chapter 9, Tables 10 and 11.
I have never seen a 120 volt secondary CPT in a motor starter that was marked Class 2.
I will just go on record as maybe I inserted foot in mouth...And the source would still need to deliver necessary inrush current for the contactor coil, so that means inrush would have to be no more than 5 mA.