AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/elec-ocpd-small-conductor

For conductors 18 AWG to 10 AWG, what two things limit the size of the overcurrent device?

Start playing free

  1. Voltage and wire color
  2. Conductor size and material
  3. Conduit length and breaker brand

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Electrician Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. EC&M: Protecting Conductors Part 3 www.ecmweb.com/maintenance-repair-operations/article/20901392/protecting-conductors-part-3 Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Trades & ShopUnder 240.4(D), the maximum overcurrent device for 14 AWG copper is how many amps?Trades & ShopThe 240.4(B) 'next size up' rule allows rounding up the overcurrent device only up to what rating?Trades & ShopBranch-circuit conductors serving a single motor must have an ampacity of at least what percent of the motor's FLC?

That's stuff everyone should know.