Code 6 Test

A disconnecting means ______ is used for isolating the motor circuit for maintenance and serves as an emergency disconnecting means and makes it an electrically safe working condition,

“in sight from the motor”

Section 110.3 provides criteria and considerations for the evaluation of equipment and recognizes listing or labeling as a means of establishing _____

suitability

A mini-circuit breaker or supplemental fuse _____ suitable for use as motor branch-circuit short-circuit and ground fault protection

are not

Separate motor overload protection shall be based upon the motor nameplate _____ rating

current

Conductors that supply a single motor used in continuous-duty application shall have an ampacity of not less than _____ of the motor full-load current rating (430.22(A))

125%

When determining the conductor ampacity and motor branch-circuit short-circuit and ground-fault protective device ampere rating, _____ is the full-load current used for the calculation for a 7 ½ horsepower, 3-phase, 208-volt induction type squirrel cage motor

24.2 A, Table 430.250

430.52, 430.52(C)(1)

The fuse rating for a circuit breaker is ______

600% (450.3(A))

For transformers 1,000 volts or less, the secondary overcurrent protection device can be split into up to ______, provided the sum of the ampere rating does not exceed that permitted if it were only a single secondary overcurrent protective device.

six devices

240.86

Equally rated systems are used where a fuse Is used on a circuit having an available fault current higher than the fuse’s marked interrupting rating by being connected on the load side of an acceptable overcurrent protective device having a higher rating.

240.86

A series rated system cannot be used where motors are connected on the load side of the higher rated overcurrent device or on the line side of a the lower-rated overcurrent device and where the sum of the motor full-load currents exceeds ____ of the interrupting rating of the lower-rated circuit breaker

1%

Section 110.22

Equal or greater

SCCR serious safety hazards include ______, ______, and ________

Fire, projectiles, shock

Section 620.62

Elevators

Selective coordination is an important consideration for reliability of emergency systems to deliver unnecessary blackout power to ________

vital loads

Ground fault OCPD’s are ________ and may not be cleared for a long period of time

low magnitude

Maximum time delay setting is ______ for ground-fault currents equal to or greater than 3,000 amperes

1 second

Ground fault protection of equipment is not permitted for ________

fire pump circuits

Improperly grounding neutral conductors can negatively affect a ______ ability to accurately detect ground-fault currents

GFPE’s

Listed manual motor controllers additionally marked ______ shall be permitted as a disconnecting means where installed between the final motor branch-circuit short-circuit protective device and the motor

approved as motor disconnect, labeled as motor disconnect, listed as motor disconnect, suitable as motor disconnect (430.109)

_______ provide protection from low-level, long time overcurrent conditions which generally cause overheating of the motor or motor branch circuit components over a long period of time (10 seconds or longer)

motor overload protective devices