A residential building is being wired with 10 AWG copper conductors. What is the maximum allowable length of the conductors between the electrical panel and the first outlet in the branch circuit?
- AAlways 100 feet
- BAlways 150 feet
- It cannot be determined from conductor size alone
- DAlways 180 feet
Where to look it up
Explicit exercise assumptions; not a universal code requirement.
Why C is correct
The conductor size alone does not establish a maximum panel-to-outlet distance. A voltage-drop calculation needs current, an allowed drop and an appropriate circuit model; installation requirements must also be checked. The stem supplies none of those additional conditions, so no fixed distance among the choices is justified.