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It depends on how thick the copper part of the wire is. A good guide is 5 amps per square millimetre of cross-section, less for a permanent installation.

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There are two factors that have to be taken into consideration when talking about wire. When amperage is talked about, that is the capacity of the wire to carry the current of the load, which is discussed above. When wire voltage rating is talked about, that is the resistance factor of the insulation wrapped around the wire to withstand the voltage that is applied to the wire. The higher the applied voltage to a wire, the higher the insulation rating has to be. Most conductors fall into three categories, 300 volts, 600 volts and 1000 volts. The 300 volt rating covers home wiring as it will never get above 240 volts. The 600 and 1000 volt rated wire is usually reserved for industrial installations.

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What gauge wire for 240 volt at 40 amps?

The ampacity of a # 10 copper wire with an insulation factor of 90 degrees C is 30 amps. All wire voltage ratings usually drop into two categories 300 volts and 600 volts. Home wiring drops into the 300 volt range and commercial, industrial, drops into the 600 volt range.


How many amps can a 12 awg wire carry at 240 volts?

The voltage has nothing to do with the capacity of a wire to handle current. A #12 copper wire with an insulation factor of 60, 75 or 90 degrees C is rated at 20 amps.


How many amps can a 14 AWG wire carry?

A wire is not like a bucket that holds amps but more like a pipe that lets the amperage flow through it. A # 14 wire is rated at 15 amps. Code only allows up to 80% for continuous use, 15 x .8 = 12 amps.


How many automotive amps can 30 foot strand of copper wire carry?

The number of automotive amps a 30-foot strand of copper wire can carry depends on the gauge (thickness) of the wire. For example, a 30-foot strand of 10-gauge copper wire can typically carry up to 40-50 amps for automotive use, while a 30-foot strand of 12-gauge wire might be limited to around 25-30 amps. It's important to consult wire ampacity tables and consider factors like temperature and voltage drop to ensure safe and effective performance.


How many amps for 14 wire how many amps for 12 wire?

A 14-gauge wire can typically carry up to 15 amps of current, while a 12-gauge wire can handle up to 20 amps. It's important to follow the manufacturer's guidelines and electrical codes when determining the maximum current for a specific wire size.

Related Questions

How many amps will 4.0 gauge wire carry?

140 AMPS


How many amps will 200ft of 6ga wire carry?

50 amps.


How many amps can 4 ought aluminum wire carry?

Aluminum 4/0 wire car carry 180 amps at at 75 degrees Fahrenheit or 205 amps at 90 degrees. .


How many amps will a 2 0 wire carry?

If you mean 2/0 copper wire it is rated 175 amps. # 2 wire is 115 amps. If you are referring to 2.0 metric it is rated 15 amps.


How many amps can 14awg 105 degree C carry?

A wire with the stats 14awg and 105 degrees Celsius can carry up to 39 amps.


What is the recommended wire size for a 220 volt circuit according to the 220 volt wire size chart?

The recommended wire size for a 220 volt circuit according to the 220 volt wire size chart is typically 10 gauge wire for a circuit with a maximum of 30 amps.


What gauge wire for 240 volt at 40 amps?

The ampacity of a # 10 copper wire with an insulation factor of 90 degrees C is 30 amps. All wire voltage ratings usually drop into two categories 300 volts and 600 volts. Home wiring drops into the 300 volt range and commercial, industrial, drops into the 600 volt range.


How many amps will 10-2 wire carry at 40 feett?

30 amps is how much a 10-2 wire will carry at 110 feet. 10 gauge wire is only good for thirty amps per the national electrical code. Using 80% of the breakers usage you will actually be getting only 24 amps.


How many amps can a 12 awg wire carry at 240 volts?

The voltage has nothing to do with the capacity of a wire to handle current. A #12 copper wire with an insulation factor of 60, 75 or 90 degrees C is rated at 20 amps.


Will awg 10 wire carry 30 amps for 30feet?

Yes, a #10 wire will carry 30 amps for 30 feet. If the load is rated as continuous then the wire will have to be derated to 80% capacity which will leave you with 24 workable amps. If the load demands currents higher that 24 amps then you will have to go to the next wire size up which is a #8 which is rated at 45 amps.


What size of copper wire can carry 30 amps?

Couple of things wrong here. 30 isn't a wire size. If you mean a wire that can carry 30 amps that would be # 10. Now it depends on how many # 10 wires you want to put into a conduit that governs the size of the conduit.


How many amps can a 14 AWG wire carry?

A wire is not like a bucket that holds amps but more like a pipe that lets the amperage flow through it. A # 14 wire is rated at 15 amps. Code only allows up to 80% for continuous use, 15 x .8 = 12 amps.