For 1/0 AWG copper conductors in a vertical raceway, the maximum spacing is which of the following?

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Multiple Choice

For 1/0 AWG copper conductors in a vertical raceway, the maximum spacing is which of the following?

Explanation:
Pulling length in a vertical raceway is limited to keep pulls manageable and protect the conductor. For copper conductors sized 1/0 AWG, the code or standard practice sets a maximum distance between pull points of 100 feet. This spacing ensures you can pull the conductors through the raceway without applying excessive force or risking insulation damage, and it provides a reasonable point to access, splice, or reposition if needed. Going beyond 100 feet would require a pull box or alternative routing to avoid overstressing the conductor. The other distances would either be unnecessarily conservative for this conductor size or exceed the allowable pull length.

Pulling length in a vertical raceway is limited to keep pulls manageable and protect the conductor. For copper conductors sized 1/0 AWG, the code or standard practice sets a maximum distance between pull points of 100 feet. This spacing ensures you can pull the conductors through the raceway without applying excessive force or risking insulation damage, and it provides a reasonable point to access, splice, or reposition if needed. Going beyond 100 feet would require a pull box or alternative routing to avoid overstressing the conductor. The other distances would either be unnecessarily conservative for this conductor size or exceed the allowable pull length.

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