What is 500 mcm wire amp rating?

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.

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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.