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The wire that is used for connecting the ground rod or plate to the electrical distribution is governed by the size of the electriclal distribution. In Canada a #6 bare copper is the minimum size for a 200 amp service.

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Conductor sizing is based on the amperage that the service is rated for. Common size services are 100 and 200 amps. The conductors would be #3 copper and 3/0 copper respectively.

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Q: What is the minimum size of service entrance conductor?
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What is the minimum size copper service entrance conductor for 145 amp service?

A #1 copper conductor with an insulation rating of 90 degrees C is rated at 145 amps.


800 amp service using parallel sets of 500 cu what size grounding electrode conductor?

For an 800 amp service with parallel sets of 500 kcmil copper conductors, the grounding electrode conductor size should be based on the largest conductor in the parallel set. The grounding electrode conductor size should be sized based on Table 250.66 in the NEC, which recommends a minimum size of 3/0 AWG copper for 1/0 AWG or larger service-entrance conductors.


If you have a 400 Amp service using 500 MCM What size grounding electrode conductor is required?

For a 400 Amp service with 500 MCM conductors, the minimum size grounding electrode conductor required would be 3/0 AWG copper or 250 kcmil aluminum based on the NEC Table 250.66.


What size service ground is needed for a 350 parallel service?

The required size of the service grounding conductor for a 350 amp parallel service will depend on the specific installation requirements and local codes. It is recommended to consult with a licensed electrician or engineer to determine the proper size based on factors such as the type of wiring used, the distance between the service entrance and the transformer, and the local ground conditions.


How do you calculate minimum conductor size?

To calculate the minimum conductor size, you need to consider the current carrying capacity of the conductor, the length of the run, and the voltage drop allowance. Use the appropriate electrical code or standard for guidance on sizing conductors based on these factors to ensure safety and optimal performance of the electrical system.