How to Hook Up a Buck-Boost Electrical Transformer

A buck-boost transformer is installed to raise or lower the voltage of a power source by small amounts. This maybe necessary to get the voltage to the right level for a particular device. It is used in tanning beds, computer uninterpretable power supplies (UPSs) and electrical power distribution systems. Hooking up a buck-booster requires connecting the electrical wires in the right terminals. Turning off the power at the source is the most important step for your safety.

Non-contact voltage detector
Wire strippers
Screwdriver

Instructions

- 1
  Turn off the power for the circuit you are working on at the building's distribution panel. This is done by opening the main breaker to the "Off" position. Confirm the power is off by touching a non-contact voltage detector to the wire's insulation.
- 2
  Remove the access cover from the side of the buck-booster with a screwdriver. Locate the electrical terminals in the unit.
- 3
  Strip 3/8 inch of insulation off the power supply wires, and the wires going to the device, with wire strippers.
- 4
  Insert the black hot wire from the distribution panel in the hot input terminal in the buck-booster, and tighten the terminal down. Then insert the white neutral wire from the distribution panel in the neutral input terminal in the buck-booster, and tighten the terminal down.
- 5
  Insert the black hot wire from the device in the hot output terminal in the buck-booster, and tighten the terminal down. Then insert the white neutral wire from the device in the neutral output terminal in the buck-booster, and tighten the terminal down.
- 6
  Insert both green or bare ground wires in the buck-booster's ground terminal and tighten it down. Install the cover back on the buck-booster.

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