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Electrical
Heating
Code
HVAC Basics
HVAC Basics
100
The situation that occurs when too much current flows through a wire damaging the insulation.
What is Over-current
100
This component pull combustion gasses through the heat exchanger
What is Draft motor
100
The minimum slope for a horizontal condensate drain line
What is 1/8" per foot
100
The state of the refrigerant entering the compressor
What is "Low pressure cool vapor"
100
The importance of installing a "drip leg" when piping a natural gas furnace
What is To trap debris or moisture before the gas valve
200
The maximum current a conductor can handle without overheating
What is Ampacity
200
Generates DC millivolts to hold in the pilot valve
What is Thermocouple
200
Where the International Electrical Code prohibit high and low voltage from running together
What is In the same conduit
200
Total heat is most closely related to.....
What is Wet Bulb Temperature
200
The state the refrigerant is in leaving the condenser
What is "High pressure liquid"
300
Chemically, Magnetism and Heat
What is 3 ways electricity generated
300
An igniter directly lights the main burner
What is Direct ignition
300
Damper installation requirements are covered by this code
What is "The National Fire Protection Code"
300
Traversing a duct with a pitot tube measures....
What is Velocity Preasure
300
A machine used for shaping longitudinal seams
What is Pittsburgh Machine
400
The output power of a electric strip heater that pulls 40 amps at 230 volts
What is 9.2 kilowatts
400
The purpose for PVC vent pipe on a 90% AFUE furnace having an uphill pitch of 1/4" per foot on horizontal section
What is To allow water to drain back to the furnace
400
Pressure sensitive gray duct tape is not a recommended method for sealing fiber glass duct system by this code
What is UL 181
400
The industry standard for reducing a trunk duct in a reducing plenum system.
What is "When the CFM/FPM is reduced by 50%
400
The required super heat for a fixed metering device system with a wet bulb reading of 60 degrees and out door temp of 90 degrees
What is 5
500
The amp draw on a motor rated at 1500 watts with an applied voltage of 110 volts
What is 13.6 amps
500
100,000 BTUs of heat energy
What is Therm
500
The maximum allowable limit of C.O.
What is 400 ppm Air Free
500
The start windings stay in this motor circuit at all times
What is PSC motor
500
The pressure-temperature relationship of a refrigerant
What is "Raising the pressure raises the saturation point of a refrigerant