To address the question right off the bat, the answer is voltage loss. There are a number of causes of voltage loss but no matter what the cause it has to be mitigated. If voltage loss is not compensated for you will experience shorter life on fixtures and poor performance overall. We’ll discuss the main causes of voltage loss and how to deal with the problem with a multi-tap transformer.
What is a Multi Tap Transformer?
Technically speaking a multi tap transformer is a step up (or down) transformer that has multiple taps on either the primary winding or the secondary winding. A multi tap transformer provides flexibility in your input and output voltage requirements.
In the landscape lighting world, a multi tap transformer provides multiple terminals with outputs ranging from 12 volts up to 15 or more volts. The installer has the choice of employing as many of the taps as necessary to ensure even voltage to all fixtures.