How can I tell if a socket or switch has a current?

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The best way is with a voltage tester. If it blinks, then power is still flowing through the circuit.

I’m replacing a light switch. How do I know which wire should be attached to each screw on the new light switch?

If you are replacing an existing switch, make a diagram of how the wires were attached to the old switch before you remove them. Snap a picture with... More »

How do I tell which steel wool is finer?

The smaller the number, the finer the steel... More »

How can I tell when the compost is ready to use?

It will look like rich, organic soil, without any large clumps in it. To test if it’s ready, plant a few grass seeds in a small pot using some of... More »

How can I tell if my deck boards need replaced before I refinish it?

If there are signs on rotting and you can poke a hole through the wood with a screwdriver, you’ll want to replace those boards with new ones of... More »

How can I tell how much span the I-Joist will handle?

Use a span table for rated... More »

How can you recognize a socket used for a 3-way lamp?

This socket will have a regular contact tab inside, which all sockets have, plus another raised contact... More »

How do I test a switch to see if it is working?

Use a continuity tester. First, shut of the electricity going to the switch and remove it. Touch the tester leads to both of the switch's terminals.... More »

My dimmer switch feels warm. Is that safe?

It is normal for a dimmer to get warm during operation, and they have a built-in heat sink for that very reason. Always be sure the load on the... More »

How do I connect a wire to the terminal on my light switch?

Bend a stripped wire 180 degrees by bending it over the tip of needle nose pliers. Wrap the wire clockwise around the screw so that it will stay in... More »

How can I stop an air draft around the light switch and receptacles?

A foam seal is available to go behind the switch or receptacle... More »