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120V 400hz & 120V 60hz in the same raceway #76110
12/09/00 10:34 PM
12/09/00 10:34 PM
E
Eclavea  Offline OP
Junior Member
Joined: Dec 2000
Posts: 5
OKC
I'm wondering what are the regulations and disadvantages besides noise?
Can somebody help me out?

[This message has been edited by Eclavea (edited 12-09-2000).]

[This message has been edited by Eclavea (edited 12-09-2000).]


Eclavea
2017 / 2014 NEC & Related Books and Study Guides
Re: 120V 400hz & 120V 60hz in the same raceway #76111
12/10/00 09:42 AM
12/10/00 09:42 AM
C
cinkerf  Offline
Member
Joined: Dec 2000
Posts: 84
Pittsburgh, Pennsysvania. ...
NEC Article 300.3(c)(1) seems to permit such an installation. (Frank) cinkerf

Re: 120V 400hz & 120V 60hz in the same raceway #76112
12/14/00 12:35 AM
12/14/00 12:35 AM
D
doc  Offline
Member
Joined: Nov 2000
Posts: 123
Texas
it is perfectly legal to run different voltages in the same conduit according to the NEC. Keep in mind that the NEC sets the minium standards.I will run 120 240 volts in same conduit but WILL NOT run 120 /240 with 277/440 you may know you did it but a lot of the unsuspecting do not know it and can be hurt or burn up equipment so if at all possible keep them apart


MAY THE SUN SHINE ON YOUR FACE IN THE MORNING AND YOU AWAKE WITH A SMILE
Re: 120V 400hz & 120V 60hz in the same raceway #76113
12/14/00 01:18 AM
12/14/00 01:18 AM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,902
NY, USA
Make sure that you label the Neutrals somehow so that they will not be confused. [Linked Image]

Re: 120V 400hz & 120V 60hz in the same raceway #76114
12/28/00 12:56 AM
12/28/00 12:56 AM
E
Eclavea  Offline OP
Junior Member
Joined: Dec 2000
Posts: 5
OKC
Thanks for your input guys.


Eclavea

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