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A 750 MCM wire with an insulation factor of 90 degrees C is rated at 500 amps. De rated to 80% will allow 400 amps on the wire. A 900 MCM wire with an insulation factor of 75 degrees C is rated at 520 amps. A 1500 MCM wire with an insulation factor of 60 degrees C is rated at 520 amps. Parallel 250 MCM will give you the same usage. A 250 MCM wire with an insulation factor of 75 or 90 degrees C are rated at 255 and 265 respectively. 255 x 2 = 510 x 80% = 408 amps. 265 x 2 = 530 x 80% = 424 amps.
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What is the wire size needed to feed a 400 amp service with parallel copper?
It depends on the length of the run
Ground wire size for 125 amp service?
six awg
What wire size for 70 amp service at 240 volt?
4 copper
What size rigid conduit for 400 amp service?
4 inch rigid conduit
Ground wire size for 200?
A 200 amp service panel will require a # 4 bare copper ground wire.
What is the wire size needed to feed a 400 amp service with parallel copper?
It depends on the length of the run
What wire size for 400 amp service neutral size?
You need to look at the regulations that apply in your country. If in doubt, use a neutral wire of the same size as the live wire or wires.
What size ground wire for 100a service?
A 100 amp residential service requires a size #8 copper wire, it should be insulated in green.
Ground wire size for 125 amp service?
six awg
What size conduit for 400 amp service?
4 inch rigid conduit
What size wire do you need for 100 amp service if you use alunimum?
2AWG.
What wire size for 70 amp service at 240 volt?
4 copper
What wire size for 100 amp single phase 3 wire commercial service?
2 copper
What size rigid conduit for 400 amp service?
4 inch rigid conduit
What is the minimum service size for a 225amp residential service?
A 200 amp service panel with a 60 amp sub-panel.
What size wire for 25 amp service with a 200 foot run?
10 guage
Do you need to change the wire size going from 100 amp service to 150 amp service?
Yes, the wire size has to be increased. The existing 100 amp service will now probably have a #3 conductor with an insulation factor of 75 or 90 degrees C which is rated for 100 and 105 amps respectively. Increasing to a 150 amp service will use a #1/0 wire size. If you are thinking of an upgrade, skip the 150 amp service and go to a 200 amp panel. New homes are installing 200 amp 42 circuit panels. The extra cost is only reflected in the materials as the labour costs will be the same regardless whether a 150 amp or a 200 amp panel is installed. The wire size for a 200 amp panel is #3/0. With an insulation factor of 75 or 90 degrees C the rating is 200 or 210 amps respectively.
