240

manufacturer

dimensions of Type S fuses, fuse holders, and adapters shall be standardized to permit interchangeability regardless of the...

1 amp, 6 amps, 601 amps.

the standard amp ratings for fuses includes...

slash

A circuit breaker with a _____ rating, such as a 120/240 v or 277/480 V can be used as a solidly grounded circuit where the nominal voltage of any conductor to ground does not exceed the lower of the two values, and the nominal voltage between any two conductors does not exceed the higher value.

vertical

enclosures for overcurrent devices shall be mounted in a _____ position unless shown to be impracticable.

within the extension cords listing requirements

flexible cord used enlisted extension cord sets shall be considered protected against overcurrent when used...

applied within the listed requirements

flexible cords approved for and used with a specific listed Appliance or Luminaire shall be considered to be protected by the branch circuit overcurrent device when...

amp and volt rating, interrupting rating where other than 10,000 amps, name or trademark of manufacturers.

fuses shall be marked with their...

hexagon

plug fuses of 15 amps or less shall be identified by a _____ configuration of the window, cap, or other prominent part to distinguish them from fuses of higher Empire ratings.

has a replacement in existing installations

plug fuses of the Edison base type shall be used only...

be used to protect internal circuits of equipment

supplementary overcurrent protection may...

6 ft 7 in

switches containing fuses and circuit breakers shall be readily accessible and installed so the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than _____ above the floor or working platform.

false

true or false, conductors supplied under the tap rules are allowed to supply another conductor using the tap rules?

true

true or false, supplementary overcurrent devices used in Luminaries or appliances are not required to be readily accessible.

S

type _____ fuse adapters shall be designed so that once inserted in a fuse holder they cannot be removed.

adapters fit Edison base fuse holders, S fuses shall be classified as not over 125 V and 30 amps.

what is true about Type S fuses?

1 / 10

when Tabs are not over 10 ft in length or field installations, and they leave the enclosure or vault in which the tap is made, the ampacity of the tap conductors cannot be less than _____ the rating of the device protecting the feeder.

on

where is the circuit breaker handles are operated vertically, the "up" position of the handle shall be the "_____" position.

overcurrent devices

_____ shall not be located over the steps of a stairway.

can

and 800 amp fuse rated at 1000 volts _____ be used on a 250 volt system.

over current Transformer AND(with) overcurrent relay

a _____ should be considered equivalent to an overcurrent trip unit for the purpose of providing overcurrent protection of conductors.

both voltage and amperage

cartridge fuses and fuse holders shall be classified according to their _____ ranges.

open

circuit breakers shall _____ all ungrounded conductors of the circuit both manually and automatically unless specifically permitted otherwise.

manual

circuit breakers shall be capable of being closed and opened by manual operation. Operation by other means, such as electrical or pneumatic, shall be permitted if means for _____ operation is also provided.

trim or cover

circuit breakers shall be marked with their Ampere rating in a manner that will be durable and visible after installation. Such marking can be made visible by removal of...

SWD or HID

circuit breakers used to switch 120v and 277v fluorescent lighting circuits shall be listed and marked...

HID

circuit breakers used to switch high intensity discharge lighting circuits shall be listed and marked as...

circuit

conductor overload protection shall not be required where the interruption of the _____ would create a hazard, such as in Material Handling magnet circuit or fire pump circuit. However, short circuit protection is required.

5000 amps

a circuit breaker having an interrupting current rating of other than _____ shall have its interrupting rating marked on the circuit breaker.

current limiting overcurrent

a device that, when interrupting currents in its current limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtained in the same circuit if the device were replaced with a solid conductor having comparable impedance, in a "_____ protective device."

current, voltage

fuse holders for cartridge fuses shall be so designed that it is difficult to put a fuse of Any Given class into a fuse holder that is designed for a blank lower or a blank higher than that of the class to which the fuse belongs.

1000 amps

ground fault protection of equipment shall be provided for solidly Grounded Wye electrical systems of more than 150 volts to ground, but not exceeding 1000v phase to phase for each individual device used as a building or structure mean disconnecting means rated _____ or more, unless specifically Exempted.

are suitably protected from physical damage, terminate at a single circuit breaker or a single set of fuses that limits the load of a compacity 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...

in bathrooms, exposed to physical damage, near easily ignitable material such as clothes.

overcurrent devices shall not be located where?

15 amps for 14 AWG, 20 amps for 12 AWG, 30 amps for 10 AWG.

overcurrent protection shall not exceed...

does not exceed 800A, conductors do not correspond with standard ratings, branch circuit is not supplying more than one receptacle for cord and plug.

the next higher standard rating overcurrent device above the ampacity of the ungrounded conductors being protected shall be permitted to be used, provided the...