CEI Service Entrance & Metering Inspection Flashcards

According to NEC 230.70, where must the service disconnecting means be located?

Answer: Outside the building or nearest the point of entrance of service conductors

NEC 230.70(A)(1) requires the service disconnecting means to be installed at a readily accessible location either outside the building or inside nearest the point of entrance.

What is the maximum number of disconnects allowed for a service entrance under NEC 230.71?

Answer: Six disconnects per service

NEC 230.71(A) permits a maximum of six disconnects per service, with each disconnect serving a separate load.

During a service entrance inspection, you observe service-entrance conductors routed through the interior of a building before reaching the service equipment. Per NEC 230.6, which condition would allow this?

Answer: The conductors are encased in 2 inches of concrete

NEC 230.6 considers service conductors outside a building when encased in at least 2 inches of concrete beneath a building or structure.

What is the minimum clearance required between service-drop conductors and a roof surface with a slope of less than 4 inches in 12 inches?

Answer: 3 feet

NEC 230.24(A) requires service-drop conductors to maintain a minimum clearance of 3 feet from the roof surface for roofs with less than a 4-in-12 slope.

When inspecting overhead service conductors, what is the minimum clearance required above a public sidewalk?

Answer: 12 feet

NEC 230.24(B) requires service-drop conductors to maintain a minimum vertical clearance of 12 feet above a sidewalk accessible to pedestrians.

Which NEC section addresses the requirement that service-entrance conductors must be protected against physical damage?

Answer: NEC 230.50

NEC 230.50 requires service-entrance conductors to be protected against physical damage, specifying acceptable wiring methods such as rigid conduit and intermediate metal conduit.