NEC National Electrical Code CH2 {Article 200-240}

rooms and suites

120 V, single phase, 15A and 20A branch circuits supplying outlets and devices installed in guest _________ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6)

43

A demand factor of _______ percent applies to a multifamily dwelling with ten units if the optional calculation method is used.

wye-connected

A three-phase, 4-wire, ________ power system used to supply power to nonlinear loads may necessitate that the power system design allow for the possibility of high harmonic currents on the neutral conductor.

Special Permission

Additional services shall be permitted for a single building or other structure sufficiently large to make two or more services necessary if permitted by __________.

6

An insulated grounded conductor _______ AWG or smaller shall be identified by a continuous white or gray outer finish, or by three continuous white or gray stripes along its entire length on other than green insulation.

30A

For installations consisting of not more than two 2-wire branch circuits, the building disconnecting means shall have a rating of not less than ______.

180

For other than dwelling occupancies, banks, or office buildings, each receptacle outlet shall be calculated at not less than ______ VA.

Auditoriums Schoolrooms Coffee shops

For the purposes of 210.71, examples of rooms that are not meeting rooms include ________

1,000A

Ground-fault protection of equipment shall be provided for solidly grounded wye electrical systems of more than 150 volts-to-ground but not exceeding 1,000V phase-to-phase for each individual device used as a building or structure main disconnecting means rated _______ or more, unless specifically exempted.

18 inches

If a set of 120/240V overhead feeder conductors terminates at a through-the-roof raceway or approved support, with not more than 6 ft of these conductor, 4 ft horizontally, passing over the roof overhang, the minimum clearance above the roof for these conductors is not less than ________.

orange

On three-phase, 4-wire, delta connected service where the midpoint of one phase winding is grounded, the service conductor having the higher phase voltage -to-ground shall be durably and permanently marked by an outer finish that is ________ in color, or by other effective means, at each terminal or junction box.

are suitably protected from physical damage terminate at a single circuit breaker or single set of fuses that limits the load to the ampacity of the conductors

Outside feeder tap conductors can be of unlimited length without overcurrent protection at the point they receive their supply if the tap conductors __________

18

Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets for dwelling unit wall spaces, unless they are located within _______ inches of the wall.

Sufficient ampacity to carry the load, & adequate mechanical strength

Service-drop conductor shall have ________

True

Single-pole breakers with identified handle ties can be used to protect each ungrounded conductor for line-to-line

A metallic enclosure A raceway A cable armor

The continuity of a grounded conductor shall not depend on a connection to

one- and two- family dwellings

The receptacle outlet required for indoor electrical service equipment shall not be required to be installed for ________

Column A

To determine the feeder calculated load for ten 3 kW household cooking appliances, use ______ of Table 220.55.

300.5

Underground service conductors shall be protected from damage in accordance with ________ including minimum cover requirements.

four

When sizing a feeder for the fixed appliance loads in dwelling units, a demand factor 75 percent of the total nameplate ratings can be applied if there are ______ or more appliances fastened in place on the same feeder.

5

Where fixed multioutlet assemblies are used in other than dwelling units or the guest rooms of hotels or motels, each _______ ft or fraction thereof of each separate and continuous length shall be considered as one outlet of not less than 180VA where appliances are unlikely to be used simultaneously.

True

Where fuses are used as the service overcurrent device, the disconnecting means shall be located ahead of the load side of the fuses in accordance with 230.91.

dwelling units dormitories guest rooms or guest suites of hotels or motels

Overcurrent devices are not permitted to be located in the bathroom of

the free ends of conductors are covered with an insulation that is equivalent to that of the conductors or with an insulating device identified for the purpose wire connectors or other splicing means installed on conductors that are buried in the earth are listed for direct burial no splice is made in a raceway

Service-entrance conductors can be spliced or tapped by clamped or bolted connections at any time as long as _________.

12 AWG copper

Underground service conductors that supply power to limited loads of a single branch circuit shall not be smaller than _______.

largest of

Where it is unlikely that two or more noncoincident loads will be in use simultaneously, only the _______ the loads used at one time is required to be used in computing the total load to a feeder.