ELECTRIC Flashcards
7 cards from real NEC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 ELECTRIC flashcards as text
A 20-ampere small-appliance branch circuit in a kitchen must use a minimum copper conductor size of:
Answer: 12 AWG
A 20-amp circuit requires a minimum 12 AWG copper conductor.
What is the maximum allowable voltage drop recommended by the NEC for a branch circuit?
Answer: 3%
The NEC recommends a maximum 3% voltage drop on a branch circuit for reasonable efficiency.
Which conductor must never be used as a current-carrying conductor under normal operation?
Answer: Equipment grounding conductor
The equipment grounding conductor carries current only during a fault, never under normal operation.
Receptacles installed outdoors at a dwelling must be protected by:
Answer: GFCI and a weatherproof cover
Outdoor receptacles require GFCI protection and a weatherproof in-use cover.
The grounding electrode conductor connects the service to the:
Answer: Grounding electrode (such as a ground rod)
The grounding electrode conductor bonds the system to the grounding electrode like a ground rod.
What is the minimum height clearance for overhead service-drop conductors above a residential driveway?
Answer: 12 feet
Service-drop conductors must maintain at least 12 feet of clearance over residential driveways.
Tamper-resistant receptacles are required in dwelling units to:
Answer: Prevent children from inserting objects
Tamper-resistant receptacles have shutters that prevent children from inserting foreign objects.