Is it ok to have 2 disconnects 230v and 460v in one panel?
- Thread starter ALESPER
- Start date
- Status
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Could you explain more of the situation. I am having a hard time understanding 2 disconnects of different voltages in a panel.
- Location
- San Francisco Bay Area, CA, USA
- Occupation
- Electrical Engineer
If you have multiple sources of power coming into a panel, one at 480V and one at 240V, you would be REQUIRED to have two disconnects in most cases. but if the source for the 240V is a transformer powered by the same 480V disconnect and attached to the panel, then another disconnect may not be necessary.
kingpb
Senior Member
- Location
- SE USA as far as you can go
- Occupation
- Engineer, Registered
Make sure that the voltage class of the lower voltage operated equipment (240V) is rated for at least 480V. In general, if that is the case, should not be an issue.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
In general, the answer is yes. In practice it is not common. I have seen a fair number of panels with seperate single phase and 3 phase disconnects though.
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