Article 430 motors Article 440 air conditioning and refrigerating equipment
115%
Hermetic refrigerant motor compressors disconnect shall have an ampere rating at least ____ of the nameplate rated load current
115%
Continuous motors with a service factor of 1.15 or greater or with a marked temperature rise of 40 degrees Celsius, will have an overload device rated at 125% , all others at ____
Disconnecting means
A cord/plug/receptacle shall serve as an AC unit_____ rated 250 volts or less if the controls are readily accessible (within 6' off the floor)
50%
Air conditioners with lighting units or other appliances on the same branch circuit shall not exceed ____ of the branch circuit rating
Overload device
Each motor over 1 hp in continuous duty shall install an ____
Cord and plug
Portable motors of 1/3 hp or less can be ____ connected
Nameplate
Separate motor overload protection shall be based on ____ current rating.
10' / 6'
The cord for 120 volt AC units shall not exceed ___ and ____ for 208v or 240v units
15 amperes
The rating of branch circuit ,short circuit, and ground fault devices for motor compressors shall not be required to be less than ____
140%
When overload devices are not enough to hold motors , service factor 1.15 or greater or marked 40 degrees Celsius can raise up to while other motors can go up to 130%
72%
Wye start ,delta run motor compressors shall have conductors between the controller and the motor compressor rated at ____
58%
Wye start, delta connected motors shall have conductors between the controller and the motor rated at _____ of the motor full-load current
Permitted
An infused switch having a horsepower rating not less than the motor horsepower shall be _____ less than 115% of the full load current rating
125%
Branch circuit conductors for a single compressor shall have an ampacity not less than ____ of the motor compressor rated load current or the branch circuit selection, whichever is greater
Sum
Conductors feeding multiple motors shall have an ampacity of 125% of the highest rated motor plus the ____ of the full load currents of the other motots
125%
Conductors for continuous duty motors shall have an ampacity not less than ____ of the motor's full load current rating
The open position
Motor circuits over 600 volts shall be permitted out of of sight of the controller if its marked with a location warning label and is capable of being locked in _____
175%
Motor compressor branch circuit protective device shall have a rating not exceeding ____ of the motor compressor rated current
80%
Plug and cord air conditioners, where no other loads are applied, shall not exceed ____ of the branch circuit rating
115%
The disconnecting means for motor circuits rated 600 volts nominal shall have an ampere rating not less than _____