What does L1 and T1 mean on a thermostat?

L1 means line 1, L2 means line 2, T1 means Thermostat 1, and T2 means thermostat 2.

Is L1 load or supply?

A one way light switch has two terminals which is a common marked as COM or C. The common is for the live wire that supplies the input voltage to the switch. The other terminal is marked as L1 and is the output to the light fixture.

What is T1 and T2 in electrical?

Terminals T1 and T2 are a thermally activated contact on the resistor to indicate an overheat condition of the resistor. The contacts are normally closed and open once the braking resistor temperature reaches 120 degrees Centigrade.

What is L1 and L2 in thermostat wiring?

A US manufacturer would label them as L1, L2, T1, T2 as you noted, because L1 and L2 are the incoming Line power. L1 and L2 are both “hot legs” of our split phase power system and measure 240v across them, as opposed to 120V if measuring L1 to Neutral.

Is T1 The hot wire?

Connect one of the thermostat wires, typically marked “T1” or “Load” to the black wire leading to the heater. Step 10. Connect the remaining thermostat wire, typically marked “T2” or “Load” to the remaining white wire leading to the heater.

What color is T1 wire?

Each wire is identified by the combination of two colors, one of which is the major color, and the second the minor color….Color coding.

green (“Line 1” tip) white/blue
red (“Line 1” ring) blue/white
black (“Line 2” tip) white/orange
yellow (“Line 2” ring) orange/white

Is L1 hot or neutral?

US AC power circuit wiring color codes

Function label Color, common
Neutral N white
Line, single phase L black or red (2nd hot)
Line, 3-phase L1 black
Line, 3-phase L2 red

What does L1 L2 L3 mean?

Terminology. The three winding end connected together at the centre are is called the neutral (denoted as ‘N’). The other ends are called the line end (denoted as ‘L1’, ‘L2’ and ‘L3’). The voltage between two lines (for example ‘L1’ and ‘L2’) is called the line to line (or phase to phase) voltage.

What does l and t mean on a contactor?

With “L” 1,2,3, the L = “Line”, meaning the incoming supply line. For the load side, “L” already had a different meaning, so the the label is T 1,2,3, with “T” = Terminus, meaning the exit point, ie going to the last thing connected in the circuit.

What does L1 and L2 mean HVAC?

The incoming circuit wires that provide the power are referred to as the line wires. L1 (line 1) is a red wire and L2 (line 2) is a black wire. Together, they show the motor voltage. Having both an L1 and L2 indicate that the motor voltage may be 240 volts.

What is L1 L2 on a furnace?

The word “circuit” is derived from the Latin, meaning “circle.” L1 or L2, “hot” or “neutral” are merely words. Your typical outlet uses BOTH main connections, the slots, to power a device. The same current is moving through BOTH wires. On a 208 – 230 volt circuit used to power a condensing unit, same thing applies.

What does L1 mean in electrical wiring?

Secondly, what does l1 mean in electrical wiring? The faceplate of a single, one-way switch has two terminals: “L1” is the terminal to which the neutral core wire is attached – the blue wire (traditionally black, before the change). “COM” or “Common” is the terminal to which the live core wire is attached – this is the brown wire (formerly red).

The L1 and L2 are probably the power connections; Line 1 and Line 2. T1 and T2 are probably the thermostat switch terminals. For heat, T1 and T2 contacts would “close” when the temperature is falling and it reaches the set point.

What does L1 T2 T3 and T4 mean on a motor wire?

For example: L1 and L2 indicate that the motor voltage may be 240 volts. T1 T2 T3 T4 T5 Motor Lead Wires. Click to see full answer.

What does L1 and L2 mean on a motor?

For example: L1 and L2 indicate that the motor voltage may be 240 volts. The T symbol designation refers to the Terminal or Termination, which in this case is a wire lead that is part of the internal motor windings. Some motor applications will require that certain T wire leads be wired together.