Learn: NCCER Module 26308-23 Commercial Electrical Services | Quizlet

Conduit, service conductors, panelboard, and overcurrent protective devices.

Electrical services consist of ___, ___, ___, and ___. (pg 304)

Service drop

If the power connects to the electric service overhead, the incoming service supply is referred to as a ___. (pg 304)

Service lateral

If the service is supplied underground, the supply is defined as a ___. (pg 304)

Cold sequence metering

When a disconnect is installed before the meter, it is known as ___. (pg 306)

Metal wireway

Sheet metal troughs with hinged or removable covers for housing and protecting electrical wires. (pg 308)

Busway

Metal enclosure containing factory-mounted bare or insulated conductors, which are usually copper or aluminum bars, rods, or tubes. (pg 309)

Cast aluminum, galvanized steel, or PVC.

Weatherheads may be of what materials? (pg 311)

Galvanized steel

Service masts are typically constructed of what material? (pg 311)

Panelboard

The final component in a commercial electrical service is the ___. (pg 311)

True

True or false: MLO panels do not have a main circuit breaker. (pg 311)

1,000V

A disconnect switch connected to the supply side of the meter (cold sequence) must be rated at no more than ___V. (pg 312)

Installed beneath the building encased in 2" of concrete or in conduit buried at least 18"

Conductors are considered outside of a building if ___ or ___. (pg 312)

13' 6"

The weatherhead or tie point for the service drop should be a minimum of ___ above final grade. (pg 313)

120/240V, single-phase

The most common service voltage for small commercial and other small loads is ___. (pg 314)

UL

Wire bending and connection space in distribution equipment is provided according to ___ standards. (pg 305)

400A and above

A group of CTs, one for each ungrounded conductor or set of conductors, is typically used in services rated ___.

Withstand torque of a fault current

Bracing of busbars is required primarily to ___.

False

True or false: Occupants are NOT required to have their own disconnecting means as per NEC 230.72(C). (pg 326)