Fire extinguishers
What color is a fire extinguisher
Red
What is the most important room to install a GFCI
The bathroom
This protects the circuit from overloads and short circuits
circuit breaker
This tool bends copper or aluminum tubing without kinking it
Tubing bender
This tool measures humidity levels in the air
A hygrometer
Temperature at which water freezes
32 degrees Fahrenheit
Used to determine the presence of unburned fuel in a sample of flue gases taken from an oil burner
Smoke tester
This component absorbs heat from indoor air
the evaporator coil
What type of fire extinguisher should be used for burning wood or paper
Type A fire extinguisher
What color is a ground wire
Green
Gas pressure is measured in what unit of measure
PSI
The terms "soft drawn tubing" refers to what type of pipe
Flexible or malleable
This safety device prevents accidental energizing of equipment during service
Lockout/tagout kit
This flexible tool is used to pull wires through conduit or ductwork
fish tape
Used to measure the flow of flue gases up a chimney or vent
Draft gauge
This component releases absorbed heat to the outdoors
the condenser coil
What type of fire extinguisher should be used on a fire that might have electricity involved
Type C fire extinguisher
What color is a neutral wire
White
When lifting heavy objects is important to lift with the ___________
Legs
The term "hard drawn tubing" is used to describe what type of pipe
Rigid
This tool is used to measure amperage, voltage, and resistance
A multimeter
Temperature at which water boils
212 degrees Fahrenheit
High soot levels in the flue gas of an oil burning furnace indicates what condition
Too little air
This device compresses refrigerant and moves it through the system
The compressor
What type of fire extinguisher should be used on a fire that involves flammable liquids
Type B fire extinguisher
What color is a hot or live wire
Red or black
Use to make sure a piece of equipment is not energized while someone is servicing it
Lockout device
These two materials are most commonly used for HVAC refrigerant lines
Copper and aluminum
Used to measure very low pressures and vacuums
Manometer
One ton of cooling equals this many BTUs per hour
12,000 BTUs
A high voltage ignition transformer on an oil burner will produce how many volts
10,000
These ducts bring conditioned air to rooms
Supply ducts
What type of fire extinguisher should be used on flammable metals
Type D fire extinguisher
The unit used to measure current in an electrical circuit
Amps
his certification is required by the EPA to handle refrigerants
EPA Section 608 certification
What is the sacrificial metal used to coat pipes and tubes to keep them from rusting
Zinc
Vacuum is measured in what unit of measure
Inches of Mercury (inHg)
The unit used to measure resistance in an electrical circuit
Ohms
The device that prevents furnace overheating by cutting off gas flow is called this
The high-limit switch
These ducts bring air back to the HVAC unit
Return ducts
What is the most universal type of fire extinguisher to have on hand
Type ABC fire extinguisher
What is the center of an atom called
The nucleus
Someone has experienced an electric shock and is unconscious what is the first thing you should do
Disconnect the power at the source
What type of gas is used to pressurize new ACR piping for leak detection
Nitrogen
This heavy-duty hand tool is used to form or bend sheet metal
A seamer or hand brake
The larger of the two refrigerant lines in a system is called this
The suction line
If the airflow across a heat exchanger is reduced the stack temperature will ____________
Go down
This device controls the flow of refrigerant into the evaporator coil
The metering device (TXV or capillary tube)