Tricks and tips for everyone


Do you need a neutral wire for a timer switch?

Do you need a neutral wire for a timer switch?

Many electrical timers require a neutral so that the switch can be powered without sending power to the load. If you do not have a neutral at the switch box it means that the power source (line) does not come into that box and you are just switching the hot from another source.

Where does the red wire go on a timer switch?

The timers red (load) goes to the black (hot) of the switch/fan (as that is the load). The white is connected to the other white plus to the white from the mains. The green is connected to the other green plus to the green from the mains.

Which is load and which is line?

The line side of an outlet is where you connect the incoming source power. The load side is where the power leaves the device (or electrical box) and travels down the circuit.

What happens if you connect neutral to ground?

If the neutral breaks, then plugged in devices will cause the neutral to approach the “hot” voltage. Given a ground to neutral connection, this will cause the chassis of your device to be at the “hot” voltage, which is very dangerous.

Does the neutral wire carry current?

To sum up, a live wire carries the full load current, while a neutral wire carries some current, only when the loads are not balanced.

What is the blue wire on a timer switch?

Blue is normally remote switch in electronic wiring basically a secondary switch to another unit that works with an initial switch elsewhere, normally the main unit.

Can you wire black and red together?

These wires are typically used for switch wiring as well as the interconnection between smoke detectors hard-wired into the power system. You can link two red wires together, or you can link a red wire to a black wire. Since red wires conduct current, they are considered hot.

Does red wire go on top or bottom of switch?

Attach the red wire from the light fixture to the nut at the top left of the switch. Connect the bare copper wire to the green nut at the bottom left of the switch.

What is a load wire on a timer switch?

The hot wire connections for a mechanical timer switch include both a LINE and LOAD connection. The LINE connection is where the incoming hot wire from the power source is connected, while the LOAD connection carries power onward from the switch to the appliance or device.

What happens if you mix up line and load?

If the load and line wiring gets messed up, a ground fault (radio in the tub) won’t trip the GFCI. There is no protection; there’s only the appearance of protection. The GFCI is a booby trap.

Why do you tie the neutral and ground together?

If you touch the casing, and some real ground (like a water pipe) at the same time, you will close the circuit and carry all of the current. So, connecting the ground to neutral totally defeats the purpose of having a ground, and actually makes it more dangerous than not having the ground at all.

Can ground and neutral be on same bar?

The answer is never. Grounds and neutrals should only be connected at the last point of disconnect. This would be at main panels only.

What happens if live and neutral wires touch?

In an electric iron being used in a household, the plastic insulation of live wire and neutral wire in the connecting cable gets torn. Due to this, naked live wire touches the naked neutral wire directly and the electric fuse of the circuit blows off.

What happens if earth and neutral wires touch?

In Short if neutral wire touches a earth wire, An earth wire carrying load current is a risk of electric shock because a person touching this earth may present an alternative path for the load current and thus the risk of electric shock.

How do I know which wire is line or load?

Load Wire – Generally connected to the top half of your switch. If the wire is coming from the top of the switch box, it is likely your load wire. Line Wire – Generally connected to the bottom half of your switch. In some cases, line wires are marked with “line”, “pwr”, or a lightning bolt symbol.

How do you wire a timer switch?

Choose Proper Switch: Make sure the timer is rated for the same amperage as your existing wiring.

  • Turn Off Power: Turn off the circuit breaker or unscrew the fuse that controls the wall switch and fixture.
  • Remove Switch Cover Plate: Remove the cover plate and use an electrical tester to verify that the power is off.
  • How to wire an indoor timer light switch?

    Step One: Turn the Power Off Begin the installation by turning the power off at the circuit breaker.

  • Step Two: Identify the Live Wire Turn the circuit breaker back on and use the tester to identify the live wire.
  • Step One: Identify the Dial Locate the dial on the main part of the switch,complete with the pointer.
  • How do you install a timer switch?

    Installation of a 3-way timer switch with jumper wire.

    How to wire 2 way switch diagram?

    Two 2-way switches

  • Bulb
  • AC supply
  • Connecting wires
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