Lighting Install
Overheating of recessed lighting fixtures, which often results in fires, is most often caused by these.
Overlamping and burying in thermal insulation.
. A T12 fluorescent lamp is ____ inch(es) in diameter and a T8 is ____ inch(es
1 1/2", 1"
. The article that covers cord-and-plug connected air conditioners is ____.
Article 440
Baseboard heating units can be controlled by ____.
Thermostats
Line Voltage Thermostats
Low Voltage Thermostats
. Recessed lighting fixtures constructed for installation in thermal insulation are rated as ____.
Type IC
Today’s electronic ballasts are considerably more ____________________ than older style magnetic ballasts
Efficient
The NEC requires that when a suspended ceiling grid is used to support lay-in type lighting fixtures, these must be securely fastened to the framing.
The lighting fixture and the ceiling grid.
The total load of an air conditioner shall not exceed ____ percent of the rating of a separate branch circuit
80%
Fluorescent lamps are color-rated in terms of Kelvin degrees. The ____ the Kelvin degrees, the ____ the color tone
Higher; Cooler
Lower; Warmer
A(n) ____ is NOT a type of fluorescent ballast
Preheat, Rapid, Instant, Dimming
The disconnecting means and branch circuit conductors for an electric furnace shall be sized not less than ____ percent of the total nameplate load shown on the furnace.
125%
The maximum current and voltage rating permitted by Code for a cord-and-plug connected air-conditioner is ______________________________ at 250 volts, single phase
40 Amps
In general, the only conductors permitted to run into or through a fixture body or integral junction box on a recessed fixture are those supplying that fixture. Other conductors are permitted to run through the fixture body or outlet box only when the lighting fixture is marked “____________________”
"Suitable for Pass Through Wiring"
What is a Class P Ballast?
A complete lighting unit consisting of a light source such as lamps, together with the parts to position the light source and connect it to a power supply.
Definition of a Luminaire.
The NEC permits flexible cords to be used to supply appliances where ____.
Appliance is listed for flexible connection; Appliance is designed for ready removal for maintenance and repair
Fixture whips used with fixtures in suspended ceilings are permitted to be of various types of cables or conductors in flexible raceways. Regardless of the wiring method used, fixture whips are permitted to be a maximum of ____ long between outlet box and fixture.
6'
The higher the ____________________ rating of a ballast, the more energy efficient
Power Factor
When Class 2 control wiring is used with central heating and air-conditioning equipment, what is the Code section that prohibits running Class 2 wiring in the same raceway as power conductors?
725.136(A)
Explain why baseboard heating manufacturers do not permit their baseboard heaters to be installed below wall receptacle outlets.
The cord of something plugged into the receptacle would hang down onto the heater and could potentially catch fire.