National Electric Code. (NEC) Article 430. Motors, Motor Circuits, & Controllers.

Motors shall be located so that adequate _____ is provided and so that maintenance, such as lubrication of bearings and replacing of brushes, can be readily accomplished.

ventilation.

Branch-circuit conductors supplying a single continuous-duty motor shall have an ampacity not less than _____ rating.

125 percent of the motor's full-load current rating as determined by 430.6(A)(1).

A separate overload device used to protect continuous-duty motors rated more than 1 hp shall be selected to trip at no more than _____ percent of the motor nameplate full-load current rating if marked with a service factor of 1.15 or greater.

125%.

The maximum dual-element time-delay fuse branch circuit protection for a single-phase motor is _____ percent of the appropriate current rating found in Table 430.248.

175%.

Overcurrent protection for motor control circuits shall not exceed _____ percent if the conductor is based on Table 310.17 and does not extend beyond the motor control equipment enclosure.

400%.

Motor control circuits shall be arranged so they will be disconnected from all sources of supply when the disconnecting means is in the open position.

True.

Where more than one motor disconnecting means is provided in the same motor branch circuit, at least one of the disconnecting means shall be readily accessible.

True.

A horsepower-rated _____ having a horsepower rating not less than the motor rating shall be permitted to serve as the disconnecting means.

attachment plug and receptacle. flanged surface inlet. cord connector.

A _____ rated in amperes shall be permitted as a controller for all motors.

branch-circuit inverse time circuit breaker, or molded case switch.

If a motor disconnecting means is a motor-circuit switch, it shall be rated in _____.

horsepower.

A motor can be provided with combined overcurrent protection using a single protective device to provide branch-circuit _____ protection where the rating of the device provides the overload protection specified in 430.32.

short-circuit. ground-fault. motor overload.

The maximum rating or setting of an inverse time breaker used as the motor branch-circuit short-circuit and ground-fault protective device for a single-phase motor is _____ percent of the full-load current given in Table 430.248.

250%.

For general motor applications, the motor branch-circuit short-circuit and ground-fault protection device shall be sized based on the _____ values.

NEC Table.

Conductors supplying several motors, or a motor(s) and other load(s), shall have an ampacity not less than the sum of 125 percent of the full-load current rating of the highest rated motor plus the sum of the full-load current ratings of all the other motors in the group and 100 percent of the remaining noncontinuous and continuous nonmotor loads.

False.

An individual disconnecting means shall be provided for each motor controller and be located _____ from the controller location.

in sight.