Article 220
Branch Circuit Calc
Branch Circuit Calc
The 3 VA per sq ft general lighting load for dwelling units includes general-use receptacles and lighting outlets. True or False?
True 220.14(J)
Solar photovoltaic systems, fuel cell systems, wind electric systems, energy storage systems, or interconnected electric power production sources are permitted to be connected to the supply side of the service disconnecting means. True or False?
True. (230.82(6))
Circuit breaker enclosures shall be permitted to be installed _____ where the circuit breaker is installed in accordance with 240.81
horizontally (240.33)
Where a main bonding jumper is a screw only, the screw shall be identified with a(an) _____ that shall be visible with the screw installed.
green finish (250.28(B))
For a single separately derived system, the grounding electrode conductor connects the grounded conductor of the derived system to the grounding electrode at the same point on the separately derived system where the _____ is connected.
system bonding jumper (250.30(A)(5))
The minimum feeder load for show-window lighting is _____ VA per linear foot.
200 (220.43(A))
Where fuses are used as the service overcurrent device, the disconnecting means shall be located ahead of the supply side of the fuses in accordance with 230.91. True or False?
True. (230.91)
A circuit breaker with a slash rating, such as 120/240V or 480Y/277V, shall be permitted to be applied in a solidly grounded circuit where the nominal voltage of any conductor to ground _____ the lower of the two values of the circuit breaker's voltage rating and the nominal voltage between any two conductors _____ the higher value of the circuit breaker's voltage rating.
does not exceed (240.85)
Two or more grounding electrodes bonded together are considered a single grounding electrode system. True or False?
True. (250.53(B) and 250.58))
Grounding electrode conductors smaller than _____ AWG shall be protected in rigid metal conduit, IMC, PVC conduit, electrical metallic tubing, or cable armor.
6 (250.64(B)(3))
A dwelling unit containing three 120V small-appliance branch circuits has a calculated load of _____ VA for the small-appliance circuits
4500 (220.52(A))
Service conductors supplying a building or other structure shall not _____ of another building or other structure.
pass through the interior (230.3)
A circuit breaker having an interrupting current rating of other than _____ shall have its interrupting rating marked on the circuit breaker.
5,000A (240.83(C))
The largest size grounding electrode conductor required is _____ copper.
3/0 AWG (250.66 and Table 250.66)
The grounding conductor connection to the grounding electrode shall be made by _____.
listed lugs, exothermic welding, listed pressure connectors (250.70 and 250.8)
Where a motor is part of the noncoincident load and it is not the largest of the noncoincident loads, 125 percent of the motor load shall be used in the calculation if it is the largest motor. True or False?
True (220.60)
Conductors other than service conductors shall not be installed in the same _____ in which the service conductors are installed.
service raceway or cable (230.7)
Outside feeder tap conductors can be of unlimited length without overcurrent protection at the point they receive their supply if the tap conductors _____.
are protected from physical damage, terminate at a single circuit breaker or a single set of fuses that limits the load to the ampacity of the tap conductors, the overcurrent device is part of the building feeder disconnect (240.21(B)(5)(1), (2), and (3))))
A means external to enclosures for connecting intersystem _____ conductors shall be provided at the service equipment or metering equipment enclosure and disconnecting means of buildings or structures supplied by a feeder.
bonding (250.94(A))
The supply-side bonding jumper on the supply side of services shall be sized according to the _____.
ungrounded supply conductor size (250.102(C)(1) and Table 250.102(C)(1))))
Under the optional method for calculating a single-family dwelling service, general loads beyond the initial 10 kVA are assessed at a _____ percent demand factor.
40 (220.82(B))
If a set of 120/240V overhead service conductors terminate at a through-the-roof raceway or approved support, with less than 6 ft of these conductors passing over the roof overhang, the minimum clearance above the roof for these service conductors shall be _____.
18 in. (230.24(A) Ex 3)
Tap conductors not over 25 ft in length shall be permitted, providing the _____.
ampacity of the tap conductors is not less than one-third the rating of the overcurrent device protecting the feeder conductors being tapped, tap conductors terminate in a single circuit breaker or set of fuses that limits the load to the ampacity of the tap conductors, tap conductors are suitably protected from physical damage
240.21(B)(2)(1) and (2)
What is the minimum size copper equipment bonding jumper for a 40A rated circuit?
10 AWG (250.102(D) and Table 250.122))
An equipment bonding jumper can be installed on the outside of a raceway, providing the length of the equipment bonding jumper is not more than _____ long and the equipment bonding jumper is routed with the raceway.
6 ft (250.102(E)(2))