0
Answer for USA, Canada and countries running a 60 Hz supply service.
500 mcm wire is a stranded wire with the equivalent of 500,000 circular mils in cross-sectional area.
A circular mil is a circle with a diameter of 1 mil, or 1/1000th of an inch.
500 kcmil means the same thing.
In common practice this size conductor is capable of handling 400 amps.
<><><>
As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Still curious? Ask our experts.
Chat with our AI personalities
Rene
Jordan
MaxineAdd your answer:
Earn +20 pts
What size wire is required for 325 amp service?
A 350 MCM copper conductor with an insulation rating of 90 degree C is rated at 350 amps.
What is the amperage rating of 800 MCM Copper wire?
600amps
Can you run 500mcm to feed 480 volt 400 amp service?
500 mcm (or 500kcmil) conductors are used for 400 amp 480v single phase or 3 phase systems. The wire AND THE TERMINALS must be rated for 90o Celsius.
What gauge is 500 amp cable?
A 750 MCM copper conductor with an insulation factor of 90 degrees C is rated at 500 amps.
What size wire is needed for 400 amp 480 volt service?
A 500 MCM wire with an insulation factor of 90 degrees C is rated at 430. Most 400 amp services will use parallel wires on each leg to feed the circuit. A 3/0 wire with an insulation factor of 75 and 90 degrees C is rated at 200 and 225 amps respectively. The insulation rating of these conductors will be 600 volts.
