Basic soldering - an illustrated guide

What is a transformer?

It's a device that changes the voltage. In most home usage, it reduces the voltage for use on low-voltage equipment, such as thermostats, doorbells and low-voltage outdoor lighting.

If there is a short in the line, where should I look for it?

Search for loose taped wire; also look for worn fabric insulation on old wires and check any terminals that have multiple wires since one of the wires may have slipped off.

How do you figure amperage?

It's watts divided by volts. For example, a 1500-watt heater (divided by) 120 volts equals 12.5 amps.

I have low-voltage outdoor lighting. Can I add additional lights?

You will have to look at your transformer to determine what its maximum wattage is. Most bulbs are 4 watts, but they come in different wattages. You will have to add up what you are currently using.

My dusk to dawn light doesn't go off and remains on all day. Do I need to replace it?

First find the sensor and see if it is being obscured by something. If not, you can probably just replace this sensor.

Is replacing my thermostat an easy project?

Yes, simply remove the old thermostat from the wall. Next, disconnect each wire and mark it so you can keep track of where it was connected. Attach the new thermostat to the wall and attach the old wires.

What is a voltage tester?

It's an inexpensive tool that tests for live current. It can save your life. To use a voltage tester, simply plug its leads into a receptacle, or, if the cover plate is off, touch them to the screw terminals of the device. If current is present, the tester will light.

Is it easy to replace a faulty plug?

Yes, start by snipping off the original plug. Slide the cord into the new plug, strip the wires and connect them to the proper terminals. For lamps and small appliances there are quick-connect plugs. The snipped wire is inserted and a small lever is closed, which holds and pierces the wire to make the connection.

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

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

Is it okay to use an extension cord with a fuse on it rather than a surge protector for my computer?

No, a surge protector has components that trip before a spike in electricity damages your electronic equipment.