Components
Electricity
Code
Ducts
Air Flow
100
3 critical factors for a replacement transformer
What is "Primary Voltage, Secondary Voltage and VA
100
The current flow of two 5kw elements are wired in parallel with 240V applied to both elements
What is "41.6"
100
The code that should be followed when deciding between state and local codes
What is "The more strict code"
100
The short side of a Transverse joint
What is " The Drive Side"
100
The study of air and its properties
What is "Psychrometrics"
200
The large center tube in the reversing valve
What is "The true Suction"
200
The type of circuit Safety devices are typically wired in
What is series circuit
200
The minimum height above the highest connected draft hood when installing Type B double wall vent pipe
What is 5ft.
200
Installed in an elbow to help move the air around the corner quieter and more efficiently
What is "Turning Vanes"
200
This happens to the air velocity when the area of the duct is decreased
What is "Increase"
300
The percentage of relative motion of a motor, indicating the difference between synchronous speed and actual motor speed under full load
What is Slip
300
The total resistance when wiring a 20 ohm resistor and a 10 ohm resistor in parallel
What is 6.6
300
After the mechanical joint is made the duct should be sealed in accordance with this code
What is UL181
300
The joint typically made with 1/2" outward cinching staples and mastic tape
What is "Longitudinal duct board joint"
300
The total volume of air
What is CFM
400
Open the contacts and energizes the potential start relay
What is "back EMF from C to S"
400
The permissible voltage drop on a 120 volt power supply
What is 10%
400
The maximum allowable sag per foot when running flexible duct horizontally
What is 1/2 inch
400
Where the fresh air intake ducts are typically connected
What is "The return side of the duct system"
400
The number of CFM output typically required of a blower for a 5 ton A/C
What is 2000
500
5-2-1 on a potential relay for a Hard Start Kit
What is Common- Start- Run
500
The run capacitor is wired in series with this winding
What is Start winding
500
The recommended material used for the drain line on a 90% furnance
What is Schedule 40 PVC
500
The number of V grooves typically cut in trunk duct made from duct board
What is 3
500
The problem with the following static readings.... Supply .12" w.c. Return .65" w.c.
What is "Return is restricted"
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