it is the brown wire in a three pin plug
The purpose of the RH wire on a thermostat is to provide power to the heating system.
The purpose of the blue wire in a thermostat is to connect the thermostat to the air conditioning system.
The purpose of the brown wire on a thermostat is to connect to the C terminal, which provides power to the thermostat.
The purpose of a white wire with a black stripe in electrical wiring is to indicate that the wire is being used as a hot wire, carrying current to power a device or appliance.
The purpose of the orange wire on a thermostat is to connect the thermostat to the heat pump, allowing it to control the heating system.
The purpose of the red wire hanging from the ceiling that is not connected to the fan is likely for future use or as a spare wire for additional electrical connections.
to discourage trespassing.
The purpose of the R wire on a thermostat is to provide power to the thermostat, allowing it to control the heating and cooling systems in a home.
The purpose of the RH wire in a thermostat is to connect to the heating system in order to control the heating function of the HVAC system.
The purpose of the blue wire on a thermostat is to connect the thermostat to the air conditioning system for controlling and regulating the cooling function.
The purpose of the orange wire in a thermostat is to connect to the heat pump, allowing the thermostat to control the heating function of the system.
The purpose of the red wire in electrical wiring is to carry electrical current to specific components or devices in a circuit.