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200 amp service is the rating of electrical power available to your home. Older homes only had 60 amp service. Newer homes were updated to 100 or 150 amp service. The standard for most US homes today is 200 amp. You can find out what your service is by looking at the top breaker in your electrical box, it should be stamped on that.

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15y ago
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10y ago

For 3/0 copper conductor with an insulation rating of 90 degrees C; the cost is $10.00 per metre.

For 3 conductor 4/0 ACWU aluminium cable with an insulation factor of 90 degrees C; the cost is $14.00 a metre. The ACWU also has the ground wire installed in the cable.

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11y ago

A 3/0 copper conductor with an insulation factor of 75 or 90 degrees C is rated at 200 and 210 amps respectively.

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Q: What size wire do you need for a 200 amp service?
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As a service entrance wire you need AWG # 3/0 gauge copper.


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AWG # 3/0 copper.


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This can't be answered without knowing the voltage, and ground is not the same as neutral, in AC circuits, which I'm assuming this is.


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.


What size ground wire is needed for 200amp service pannel in Chicago?

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