HVAC and Thermostat Wiring Quiz

What does the 'C' wire in thermostat wiring typically represent?

• Circuit wire

• Control wire

• Cooling wire

• Common wire

Which color is commonly used for the 'R' wire in thermostat wiring?

• Black

• Red

• Green

• Blue

What is the primary function of the 'G' wire in thermostat systems?

• Fan

• Ground

• Guide

• Gas control

Which wire is typically used for heating in a thermostat setup?

• Yellow

• White

• Blue

• Orange

What does the 'Y' wire connect to in a thermostat system?

• Fan

• Heater

• Compressor relay

• Gas valve

In a 5-wire thermostat setup, which additional wire is included compared to a 4-wire setup?

• Common wire

• Data wire

• Extra fan wire

• Second power wire

What is the purpose of the 'O/B' wire in a thermostat?

• To optimize the boiler

• To operate the reversing valve

• To open the baseboard heater

• To operate the battery

Which wire is not typically found in a basic thermostat wiring setup?

• Red

• Green

• Purple

• White

What is the minimum number of wires needed for a basic thermostat operation?

• 1

• 2

• 3

• 4

What does the 'W' wire typically control in a thermostat?

• Heating

• Wattage

• Weather settings

• Water flow