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A #8 copper conductor with an insulation factor from 75 to 90 degrees C is rated at 45 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.
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What size wire for a 40 amp breaker to a welder?
A #8 aluminium wire with an insulation factor of 90 degrees C is rated at 45 amps.
Can you use 40 amp breaker for your lights and plug ins?
If you are referring to house wiring then the answer is no. A breaker protects the wire size that is connected to the breaker. In home wiring most homes are wired with a #14 wire which is rated at 15 amps. That is why the wire is protected by a 15 amp breaker. The correct wire size to connect to a 40 amp breaker is a #8. This size wire is too large to connect to receptacles an light fixture terminals.
What size wire do you need to run a 240V plug for a dryer?
the size of the wire that you need to run depends on the the amperage of the device/appliance you'll be hooking up to that line. Use #12 wire for 20 amp, #10 for 30 amp, #8 wire for 40 amps and #6 for 50 amps. Hope that helps.
What size wire cable and fuse for a 9.8KW shower?
7.2kW shower = 32 Amp fuse = 6 mm2 cable size7.5kW shower = 40 Amp fuse = 10 mm2 cable size8.5kW shower = 40 Amp fuse = 10 mm2 cable size9.5kW shower = 40/45 Amp fuse = 10 mm2 cable size10.5kW shower = 45 Amp fuse = 16mm2 cable size
What size wire for a 40 amp breaker?
A 40 amp breaker is used in conjunction with AWG # 8 copper wire. The black and red wires are connected to the breaker. The ground wire is connected to the ground bar and the white wire is connected to the neutral bar.
