mstrlucky74
Senior Member
- Location
- NJ
Can you have a 45kva xfrmr feed two different panels?Thought it could only feed one load. Thanks.
Xfrmr Feed
- Thread starter mstrlucky74
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jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Depends.
240.21(C) has 6 scenarios.
How long are the secondary conductors?
What type of loads? Panels?
Need more info.
240.21(C) has 6 scenarios.
How long are the secondary conductors?
What type of loads? Panels?
Need more info.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Need to read closer, OP said panels.::slaphead:
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
A quick look says:
C2-maybe
C4-no
C6-no
C2-maybe
C4-no
C6-no
kwired
Electron manager
- Location
- NE Nebraska
I think C4 is a maybe. One could have more then one set of tap conductors leave the transformer in that situation but each set must end in an individual overcurrent device.
One must also consider that for other then two wire single phase systems or three phase three wire delta systems - you usually need to pay attention to transformer secondary overcurrent protection in those cases where you could supply more then one overcurrent device.
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
I wlll go back and look at C4.
OP does not usually seem to work on the two wire set ups so I did not include it or industrial.
Kinda guessing maybe 480-208/120 till he posts more info.
Could be outside also I suppose.
Need more info.
kwired
Electron manager
- Location
- NE Nebraska
I agree it is likely 480 - 208/120. Such system will need secondary protection, but doesn't have to be a single device. 25 foot tap and the outdoor tap must end in an individual overcurrent device, but nothing says you can't have multiple taps off the transformer either.
Two issues here, transformer secondary protection and overcurrent protection for the tap conductor(s).
- Location
- Connecticut
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- Engineer
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