In a residential building, what is the maximum length of a solid nonmetallic-sheathed cable (NM-B) that can be used for branch circuits?

ICC E1 exam practice question · Services

In a residential building, what is the maximum length of a solid nonmetallic-sheathed cable (NM-B) that can be used for branch circuits?

A100 ft
B150 ft
200 ft
D250 ft

Exam tip

Understand the limitations on cable lengths as specified in the IRC to ensure compliance with code requirements.

Why C is correct

According to 2024 International Residential Code (IRC) 336.12, the maximum length of NM-B cable for branch circuits is 200 ft. This length includes both the run from the panel to the outlet and the run from the outlet to the device.

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In a residential building, what is the maximum length of a solid nonmetallic-sheathed cable (NM-B) that can be used for branch circuits?

In a residential building, what is the maximum length of a solid nonmetallic-sheathed cable (NM-B) that can be used for branch circuits?

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