Chapter Questions
Describe the difference between motor short-circuit protection and motor overload protection. _____________________________________________________
When determining the short-circuit protection percentage for a 1 hp single-phase motor that has a name plate current of 14.7 amps, what value of current would you use?_____________________________________________________________
If a single-phase motor supplied by a two-wire, 120-volt circuit with one conductor grounded, needed an overload unit, in which conductor would the unit be installed?____________________________________________________________
An impedance-protected motor would be protected against overcurrent by the____________________________________________________________.
Where installing a single-phase motor that is not Z protected, the short-circuit ground-fault protection is rated at ________________% of ________________ value when using an inverse time breaker.
If you have to install a constant voltage DC motor using an inverse time breaker for short-circuit protection, then use a breaker rated at ________________ % of Code book value.
The branch-circuit conductor that supplied power to a single-phase cap start motor should be rated at ________________ % of the ________________ ________________ value for the motor at connected voltage and rated hp.
The standard controller for a motor used in residential garbage disposal is a ________________.
A single-phase air-conditioner outdoor condenser/compressor would have a ________________ connected within sight of the unit.
If a continuous duty motor more than 1 H.P. has a thermal protector protecting it from overload and the service factor is 1.15, then the trip value of the OL would be ________________% of the nameplate current of the motor.