Which NEC section covers overhead service conductor sizing and ampacity?

Which NEC section covers overhead service conductor sizing and ampacity?

• A. 230.23 covers overhead service conductor sizing and ampacity
• B. 230.31 covers underground service conductor sizing and ampacity
• C. 310.12 covers single Ø dwelling services and feeders
• D. 430.248 covers FLC for single Ø motors

Answer: (A)

Overhead service conductor sizing and ampacity are addressed in Article 230, with the specific section 230.23 covering overhead service conductors. This part provides the rules and ampacity tables you use to size conductors based on the service rating and the insulation temperature rating, ensuring the conductors can carry the required load safely. It also accounts for any applicable adjustment factors. The other sections referenced deal with different scenarios: underground service conductors, general dwelling services and feeders, and motor full-load currents, none of which are the overhead service conductors topic. So the correct reference for overhead service conductor sizing and ampacity is 230.23.

Overhead service conductor sizing and ampacity are addressed in Article 230, with the specific section 230.23 covering overhead service conductors. This part provides the rules and ampacity tables you use to size conductors based on the service rating and the insulation temperature rating, ensuring the conductors can carry the required load safely. It also accounts for any applicable adjustment factors. The other sections referenced deal with different scenarios: underground service conductors, general dwelling services and feeders, and motor full-load currents, none of which are the overhead service conductors topic. So the correct reference for overhead service conductor sizing and ampacity is 230.23.