TSSA G2 Exam
G2 Exam Study Guide Questions with
Accurate Solutions Graded A+ 2025
A draft hood will prevent what? -Correct Answer ✔A down draft from entering an
appliance
A receptacle-mounted ground fault interrupter protects against? -Correct Answer
✔Current flow to ground
When a draft control is required; which of the following appliances would utilize a
single acting type draft regulator -Correct Answer ✔An incinerator
A fire tube boiler had -Correct Answer ✔Water outside the tube and glue gases
inside
What is the minimum clearance from combustibles materials to a single wall vent
connector from a conversion burner with a draft hood -Correct Answer ✔9"
What is the point where two metals are joined in a thermocouple -Correct Answer
✔Hot junction
The Ontario building code requires that master bedrooms must have a minimum
ventilation air supply of -Correct Answer ✔20CFM
The primary function of a surge arrestor in the top of a regulator is to -Correct
Answer ✔Reduce the opening speed of the regulator
As the temperature of a thermistor increases, the current flow through it -Correct
Answer ✔Increases
As the length of a conductor increases -Correct Answer ✔It's resistance increases
TSSA G2 Exam
,TSSA G2 Exam
A propane vaporizer shall not raise the pressure in the tank in excess of -Correct
Answer ✔215psig (1500 kPa)
In a domestic heat pump application, what is the minimum volume of supply air
(CFM) per ton of cooling required -Correct Answer ✔450CFM
In domestic air conditioning applications, what is the minimum volume of supply
air (CFM) per ton of cooling -Correct Answer ✔400CFM
What is used to remove the start winding from operation when the motor reaches
approximately 75% of its normal running speed -Correct Answer ✔A potential
relay
How often should a t-stay be cleaned -Correct Answer ✔At least once a year
Tubing systems for residential buildings should be identified utilizing yellow
labels or markings with intervals not exceeding -Correct Answer ✔6 ft along the
entire length
To what angle should pipe be beveled if it is to be welded -Correct Answer ✔37.5
degrees
The temp of a high intensity infrared heater could reach up to -Correct Answer
✔1800 F
What is the minimum ventilation rate in the master bedroom in a dwelling unit -
Correct Answer ✔10 L per second
What is not commonly used as a overpressure protection device -Correct Answer
✔Leak limiter
What purpose will the fan control perform in a furnace -Correct Answer ✔Start the
fan, stop the fan
TSSA G2 Exam
, TSSA G2 Exam
What is the minimum clearance required between combustible material and a
single wall vent connector -Correct Answer ✔6 inches
Polarization in an AC circuit refers to -Correct Answer ✔The difference between
hot, neutral and ground
When the flow rate through a pool heater is greater than 125 gallons per minute,
what is required to be installed on the heater and where -Correct Answer ✔A
manual bypass valve between the heater and the inlet and outlet pipes
A gradual decrease in cooling efficiency of a gas fired refrigerator is indicative of?
-Correct Answer ✔Off-level operation
Where is the lowest air pressure in a forced warm air heating system -Correct
Answer ✔Upstream of the blower
When a new appliance is to be installed in a typical residential basement and the
supply wiring is to be concealed, which type of wire is acceptable, and most cost
effective -Correct Answer ✔NMD
Which instrument is used to determine the speed of a direct drive motor -Correct
Answer ✔A tachometer
Before lighting a burner in a steam boiler ensure that -Correct Answer ✔There is
water in the boiler
Armored cable is called -Correct Answer ✔BX cable
A diode -Correct Answer ✔Allows current to only flow in one direction
TSSA G2 Exam
G2 Exam Study Guide Questions with
Accurate Solutions Graded A+ 2025
A draft hood will prevent what? -Correct Answer ✔A down draft from entering an
appliance
A receptacle-mounted ground fault interrupter protects against? -Correct Answer
✔Current flow to ground
When a draft control is required; which of the following appliances would utilize a
single acting type draft regulator -Correct Answer ✔An incinerator
A fire tube boiler had -Correct Answer ✔Water outside the tube and glue gases
inside
What is the minimum clearance from combustibles materials to a single wall vent
connector from a conversion burner with a draft hood -Correct Answer ✔9"
What is the point where two metals are joined in a thermocouple -Correct Answer
✔Hot junction
The Ontario building code requires that master bedrooms must have a minimum
ventilation air supply of -Correct Answer ✔20CFM
The primary function of a surge arrestor in the top of a regulator is to -Correct
Answer ✔Reduce the opening speed of the regulator
As the temperature of a thermistor increases, the current flow through it -Correct
Answer ✔Increases
As the length of a conductor increases -Correct Answer ✔It's resistance increases
TSSA G2 Exam
,TSSA G2 Exam
A propane vaporizer shall not raise the pressure in the tank in excess of -Correct
Answer ✔215psig (1500 kPa)
In a domestic heat pump application, what is the minimum volume of supply air
(CFM) per ton of cooling required -Correct Answer ✔450CFM
In domestic air conditioning applications, what is the minimum volume of supply
air (CFM) per ton of cooling -Correct Answer ✔400CFM
What is used to remove the start winding from operation when the motor reaches
approximately 75% of its normal running speed -Correct Answer ✔A potential
relay
How often should a t-stay be cleaned -Correct Answer ✔At least once a year
Tubing systems for residential buildings should be identified utilizing yellow
labels or markings with intervals not exceeding -Correct Answer ✔6 ft along the
entire length
To what angle should pipe be beveled if it is to be welded -Correct Answer ✔37.5
degrees
The temp of a high intensity infrared heater could reach up to -Correct Answer
✔1800 F
What is the minimum ventilation rate in the master bedroom in a dwelling unit -
Correct Answer ✔10 L per second
What is not commonly used as a overpressure protection device -Correct Answer
✔Leak limiter
What purpose will the fan control perform in a furnace -Correct Answer ✔Start the
fan, stop the fan
TSSA G2 Exam
, TSSA G2 Exam
What is the minimum clearance required between combustible material and a
single wall vent connector -Correct Answer ✔6 inches
Polarization in an AC circuit refers to -Correct Answer ✔The difference between
hot, neutral and ground
When the flow rate through a pool heater is greater than 125 gallons per minute,
what is required to be installed on the heater and where -Correct Answer ✔A
manual bypass valve between the heater and the inlet and outlet pipes
A gradual decrease in cooling efficiency of a gas fired refrigerator is indicative of?
-Correct Answer ✔Off-level operation
Where is the lowest air pressure in a forced warm air heating system -Correct
Answer ✔Upstream of the blower
When a new appliance is to be installed in a typical residential basement and the
supply wiring is to be concealed, which type of wire is acceptable, and most cost
effective -Correct Answer ✔NMD
Which instrument is used to determine the speed of a direct drive motor -Correct
Answer ✔A tachometer
Before lighting a burner in a steam boiler ensure that -Correct Answer ✔There is
water in the boiler
Armored cable is called -Correct Answer ✔BX cable
A diode -Correct Answer ✔Allows current to only flow in one direction
TSSA G2 Exam
