How to Wire a Lighting Transformer
- 1). Identify the input and output connections on your transformer. Usually, a low-voltage lighting transformer will have a cord with a plug on the 120-volt input side. The output side will have any of a variety of types of connectors, some of which may not even need tools to make the connections. Larger transformers may have two or more outputs to branch off in different directions. The input may be marked "120 volts" and the output marked "12 volts."
- 2). Connect your lighting system to the 12-volt output of your transformer. Select a wire size compatible with your system, and use connecting hardware compatible with your wire size and the particular hardware of your transformer output. Each branch of your lighting system will have two connections.
- 3). Plug your transformer into a wall socket. If your transformer does not have a cord already attached, you will need to make one. Use a two-conductor wire for a two prong wall plug or a three-conductor wire for a three-prong plug. Your transformer could require either.
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