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Hard to answer this question with out the load type and amperage. Depending on the type of load some wire feeders have to be increased by 25%. For a correct answer state what the three phase load is and its wattage or amperage.

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 REALLY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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14y ago
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10y ago

A #8 copper conductor with an insulation factor of 90 degree C is rated at 45 amps.

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14y ago

8 gauge wire

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Anonymous

Lvl 1
3y ago

10 gauge

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Q: What size wire in a 40 amp 220 volt circuit?
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Related questions

What size wire for an 80 amp 220 volt circuit?

# 3 gauge


What size wire is required for a 220 volt at 54 amps?

6 AWG


How long does current remain in a 220 volt circuit?

The current will remain in a 220 volt circuit as long as the circuit load remains in the circuit and the circuit remains closed.


Can you use a neutral wire from a existing 110 volt 20 amp circuit to supply a neutral for a washer dryer combo that has only a 220 volt 30 amp 2 wire?

No !


What size in a 90 amp 220 volt circuit?

4 AWG copper or 2 AWG aluminum.


How do you install a 2 pole CB 220 volt using AWG eight two wire to fuse box?

If it's a 220 volt circuit without a neutral bring wire into panel, put ground wire on ground bar, put load wires onto breaker.


Is a 220 volt electrical power wire the same as a 240 volt electrical power wire?

Yes 220 & 240 are considered the same.


What size wire do you need for 20 amp 220 volt electric motor?

12 AWG in most circumstances.


Can you use the ground conductor in a 14 AWG 2 conductor with a ground for the neutral in a 220V 15 amp circuit with less than 50ft run?

yes <<>> No, the ground wire is never to be used as a neutral. In this case if you need a 120 volt circuit from the 220 volt circuit a three wire cable (3C #14) must be installed.


Can you supply three 220 -240 volt 16.6 amp infrared heaters with one circuit?

Can you supply three 220 -240 volt 16.6 amp infrared heaters with one circuit?


Can 110 volt apliance work on 220 volts circuit?

NO - that is dangerous.


What size wire do you need for 220 feet?

Cannot answer this question. Will need to know the voltage and amperage of the circuit. Also need to know the application i.e. is it a lighting circuit or a motor circuit?