Soares
Chapter 1 and 2
Chapter 1 and 2
Connected to, connecting to, ground or to a conductive body that extends the ground connection.
What is Grounding?
The conductors of a remote motor control circuit outside of the controlled device must be installed in a ________ or otherwise protected
What is raceway
Locations where flammable gases, flammable liquid produced vapors, or combustible liquid-produced vapors are or may be present in the air quantities sufficient to produce explosive or ignitable mixtures
What is a class I location?
Power that is 90 degrees out of phase with true power
What is Reactive power
This NEC article covers grounding and bonding.
What is article 250?
The maximum fixture whip length when wiring suspended ceiling fixtures
What is 6'
The types of hazardous materials that would cause a class 3 fire or explosion
What is Ignitable flyings/fibers
The insulating material between 2 metal plates of a capacitor
What is dielectric?
An unintentional electrically conductive connection between an ungrounded conductor of an electrical circuit and the normally non-current carrying conductors, metallic enclosures, metallic raceways and metal equipment, or earth.
What is a ground fault?
The most common type of 3 phase motor
What is squirrel cage induction motor
Wiring methods recognized for use in Class III Division 1 locations
What is Rigid metal conduit, Type PVC conduit, Type RTRC conduit, IMC, EMT, dusttight wireways, or type MC or MI cable with listed termination fittings
The number of time constants it takes to fully charge or discharge a capacitor
What is 5 time constants
The minimum distance between two ground rods
What is 6 feet?
The3 electrical classes of fluorescent lamps and lighting fixtures
What is Rapid-Start, Instant-Start, and Preheat
The listing category for flexible cords supplying electric vehicle chargers
What is extra-hard usage
The rate at which capacitors charge and discharge
What is exponential rate
System voltages above ground are not necessarily balanced or controlled is a disadvantage of this type of system.
What is an ungrounded system?
Fixtures must be kept this distance from thermal insulation
What is 3"
The classification and division oil-immersed contacts are used
What is Class 1 Division 2
The total capacitance of a circuit containing 3 capacitors connected in parallel with values of 13 uF, 17 uF, and15 uF
What is 45 microfarads