Install your low voltage lighting transformer near a wall socket. Some models are rain-proof and you can mount them outdoors, but do not mount an indoor transformer outdoors.
Install your lighting fixtures in the locations you desire.
Select the proper size wire for your system. Select either 10 gauge (the largest), or 12, 14 or 16 gauge. The wire size will depend on the total wattage of your lighting system and the distance of the lights from the transformer (see Resources below).
Connect the output wiring. Wire your low voltage lighting system so that each bulb socket has two leads coming from the transformer. All lights must be wired in parallel, meaning that the two leads from the transformer can connect to several sockets, but the wiring must have direct connections from the transformer to the socket. You cannot run a wire from the transformer to one side of a bulb, and from the other side of the bulb to another bulb. Connect two wires from the transformer to the first socket, and then extend the two wires on to the next socket.
Connect the low voltage transformer to your AC house wiring. Most low voltage lighting transformers come with the AC cord already attached. If not, install a standard or outdoor three-prong plug to the transformer, with the exact details depending on the particular transformer.
Things You Will Need
- Basic electrician's hand tools
- Basic electrical wiring hardware
- Wire, size depending on your system layout
- Many low voltage lighting transformers come in prepackaged kits that include timers, lights, fixtures, wiring and specific installation instructions.
- You can wire several sockets to the same output as long as you don’t exceed the power rating of your transformer.