8chapters 19,20,21

true

a dual-element fuse size at approximately 125% of the full load current rating of the motor adds extra overprotection to the overload protection built into a food waste disposal?

GFCI

a duplex grounding type receptacle is usually installed in it accessible location under the sink for plugging in the dishwasher and food waste disposal and it does not have to be........ protected

125 percent

a feeder or service neutral load can be figured at ........ of the load on the ungrounded conductor for ranges and ovens

interrupt all ungrounded circuit conductors

a unit switch used as a disconnect means for an appliance shall

load management controls conductors have overcurrent protection shall be permitted within service raceways

according to NEC 230. 7 conductors other than service entrance conductors are not permitted in the same raceways as the service entrance conductors. however, what does exception number 2 permit?

a horsepower-rated switch

all of the following are acceptable disconnecting means for appliances except for .......

125 percent

an electric water heater is a continuous load that requires that their branch circuit rating must not be less than ....... of the nameplate rating

50 ft

an individual motor disconnect must be in sight of the motor control and must disconnect a controller. that NEC definition of in sight means that the controller must be visible and not more than ......... from the disconnect

250

article ...... part VI covers equipment grounding and Equipment grounding conductors

NEC 430.102

article 430 contains requirements for Motor installation the section that requires a motor disconnect to be within sight of the motor or capable of being locked is ........

125

because a water heater represents a continuous load, the branch circuit must be rated not less than ..... percent of the water heater nameplate rating.

true

because of the problem of people being scalded many Municipal and states have implemented code requirements that water heater thermostats to be set at not over a 120 degrees

to preserve rates Utility Company Mesa clocks to prevent high power consumption

briefly explain what is meant by the electrical utility program known by all of the following names time of day time-of-use and off-peak

40 Ampere

calculate the overcurrent protection needed for a countertop cooking unit rated at 7450 Watts 120 / 240 voltd

dryer, rangr

cord set rated 30 amperes are usually called ........ cords and cord sets rated 40 45 or 50 amperes are called ....... cords

false

dishwashers and kitchen waste disposal may be connected to any of the required 20 amperage small appliance branch circuit in the kitchen

115/230

dual voltage rated pumps are rated

the cabinet door can be classified as a bear avoiding a 6-foot roof from the sink

explain why 125 volt 15 or 20 amp receptacles installed in a under cabinet space to supply dishwasher and or food waste disposal is not required to have GFCI protection for personal use

to add a safety Factor by higher the normal voltage's this help reduce premature burnouts of heating elements if the voltage or 5% higher

explain why heating elements in water heaters are frequently rated 250 vote for operation on 240 volt circuit

30 amperes maximum

for appliances that have no marked maximum overcurrent protection, the branch circuit overcurrent protection is sized at .......

load demand is figure that 8Kw that are rated less than 12 KW

in table 220 55 what is the rationale for allowing demand factors for electric ranges but not for a wall-mounted oven or individual counter mounted cooking units

breaker

lock off Provisions for appliances must be permanent installed on the are switch

horsepower-rated

motor disconnects are required to be ...........

direct connection, junction box

name at least two different methods for connecting electric ranges ovens and cooktops

longer

on all types and ratings of receptacle the ground and blade is ....... then the others to ensure that it makes its connection before the grounded conductors do and break its connection after they do (first make last break).

dryer, range

receptacles rated 30 amperes are referred to as ....... receptacles, and receptacles rated 50 amperes are called ......... receptacles

a raceway with suitable conductors

should it be required to run a pump's circuit underground for any distance it is necessary to install type UF or type USE cable or .......... and then make up the necessary splices in a listed weatherproof junction box

portable

small appliance circuits are intended to serve countertops for cord-connected ....... appliances only

is not

submersible pump cable supplied with pump assemblies ......... also suitable for direct burial

use amperage rating table NEC 240 6

the NEC permits overcurrent protection devices for individual Branch circuits to appliances to be sized up to 150% of the Appliance amperage rating however if the 150% sizing does not correspond to a standard size fuse are circuit breaker then what is permitted

422

the code article that specifically addresses electrical appliances

440

the code requirement for standard resistant type of electric water heaters are found in article 422. because heat pump water heaters contain a hermetic refrigerant motor compressor their code requirement are found in article ........

3 ft

the maximum flexible cord length permitted for kitchen waste disposal is ........

heaters

the overload protection for a motor might be thermal overloads sometime called ........ in the controller electronic sensing overloads device built-in thermal protection or time delay fuses

marked-off-position

unit switches that have a ...... are acceptable as the disconnecting means for that Appliance

higher

what are the values of branch circuit protection required for Motors according to table 430.52 do not correspond to standard ratings as listed in NEC 240. 6 the next ........ rating is permitted to use

is not

when a food waste disposer has a integral on-off switch an additional separately installed switch ......... required

both a and c

when a non motor operated electrical Appliance is not Mark what is overcurrent protection device ratings NEC 422. 11 (e) States that the branch circuit overcurrent protection shell be .......

100 percent

when a separate branch circuit is ran to a wall-mounted oven or to a counter mounted cooking unit the branch circuit sizes based on ......... of the nameplate rating of the appliance

422.11 (a)

NEC ....... requires that the branch circuit overcurrent protection shall not exceed the ratings marked on the appliance

either A or B

NEC 422.60 (A) requires that an appliance nameplate show.......

open all

NEC 430.103 requires that a disconnecting means for a motor shall ..... ungrounded conductors

12

Per of specifications the branch circuit conductors for food waste disposals and dishwashers are ........ AWG