Residential Electrical Inspection Flashcards

What is the minimum number of 20-ampere small appliance branch circuits required in the kitchen of a new single-family dwelling per NEC 210.11(C)(1)?

Answer: Two

NEC 210.11(C)(1) requires at least two 20-ampere small appliance branch circuits to serve receptacles in the kitchen, pantry, breakfast room, and dining room.

An inspector observes that a grounding electrode conductor (GEC) is spliced using a wire nut inside a junction box. Is this acceptable under NEC 250.64(C)?

Answer: No, GECs must be continuous or spliced only using listed irreversible compression connectors or exothermic welding

NEC 250.64(C) permits GEC splicing only where the GEC is not continuous and only using listed irreversible compression connectors or exothermic welding; wire nuts are not permitted.

Under NEC 230.54, service entrance conductors entering a raceway through a weatherhead must be arranged so that water cannot enter the raceway. This is best achieved by:

Answer: Draping the conductors in a drip loop below the point of attachment

NEC 230.54(F) requires service entrance conductors to be arranged with a drip loop so that water drains away from the service raceway entrance.

A new home has a bathroom with only one receptacle outlet on a 15A GFCI circuit shared with the hall lighting. Is this installation compliant?

Answer: No, the bathroom receptacle must be on a dedicated 20A circuit serving only bathroom receptacles

NEC 210.11(C)(3) requires at least one 20-ampere branch circuit dedicated exclusively to bathroom receptacle outlets; it cannot be shared with lighting or other loads.

When inspecting a residential service panel, the inspector finds the neutral bar bonded to the enclosure with a bonding screw. This panel is the main service disconnect. Is this correct?

Answer: Yes, the neutral-to-ground bond is required at the main service disconnect

NEC 250.24(A)(5) requires the neutral (grounded conductor) to be bonded to the service disconnecting means enclosure at the main service disconnect.

What is the maximum distance a receptacle outlet can be placed from a doorway along a wall space in a residential living room per NEC 210.52(A)?

Answer: 6 feet

NEC 210.52(A) requires receptacles to be placed so that no point along the floor line is more than 6 feet from a receptacle outlet, measured horizontally along the wall.

A residential inspector finds a 240V, 2-pole, 60A breaker feeding a hot tub. The feeder uses 4 AWG copper conductors. Is the wire sizing appropriate?

Answer: Yes, 4 AWG copper is rated for exactly 60A at 75°C terminations

Per NEC Table 310.16, 4 AWG copper is rated for 85A at 75°C, but terminals are typically limited to 60°C (70A) or 75°C — in practice, 4 AWG at 75°C terminals supports 85A, making 60A a conservative and acceptable application.