NEC 2026 Compatible

An aluminum service conductor, type R90, is to be installed in a raceway. The calculated service load is 150A. What is the minimum size of aluminum conductor required based on CEC Table 2 (NEC 310.16)? Assume no temperature or bundling adjustments are needed.

Journeyman Level📋 CEC Table 2 (NEC 310.16)Wire Sizing & Ampacity
A

No. 1/0 AWG

B

No. 2/0 AWG

C

No. 3/0 AWG

D

No. 4/0 AWG

Explanation & Direct Citation

The correct answer is located in the National Electrical Code Section XXX.XX(Y)(Z). Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident.

Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam.

Unlock the Answer & Explanation

Sign in to get 3 free questions with full explanations — no payment needed.

    Wire Sizing & Ampacity Practice Question: CEC Table 2 (NEC 310.16) | SparkShift | SparkShift