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How to Mount Switchboard Hardware

Switchboards are mechanical instruments that direct electricity from one source to another. The role of a switchboard is to create a division between the main current and smaller currents. The switchboard also provides switching, current protection and metering for electrical currents. Switchboards safely distribute power to transformers, panelboards, control equipment and major system loads. Switchboard hardware is the smaller devices used to create and mount switchboards.

Things You'll Need

  • Drill
  • Wrench
  • Adaptors
  • Mounting bolts
  • Switchboard mounting plate (optional)
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Instructions

    • 1

      Turn off power to the circuit that is feeding the switch by removing the fuse or shutting down the circuit breaker that is feeding power to the switchboard.

    • 2

      Place the switchboard mounting plate in the desired position and secure tightly with mounting hardware by aligning the adaptor blocks with the cutouts in the mounting plate and securing them tightly into place with the furnished flatwashers, lockwashers and hex nuts. Tighten to the necessary torque.

    • 3

      Unfasten the four breaker terminal shields screws and remove the line and load side shields. The line portion is the power coming into the breaker and the load portion is the power going out of the breaker. The line and load are important because the power coming into or out of the electrical devices shows the direction in which the power is flowing.

    • 4

      Position the terminal, or power, stabs, which allow for wiring to be easily connected, vertically on the backside of the breaker. These should be secured by hex head bolts. Tighten the bolts with the proper torque to ensure a good electrical connection.

    • 5

      Repeat Step 4 for the remaining terminals.

    • 6

      Embed the end shields into the provided slots at the line and load end of the breaker. These should easily slide into the arranged slots followed by tightening them into place. Placing the kit label (if included) on the front of the circuit breaker will give breaker warnings and safety information.

    • 7

      Connect the power bus wire to the mounting block studs so that they will align with the panelboard. The breaker should be placed over the terminal block studs followed by installing the four slotted circuit breaker mounting nuts in unison so the breaker remains parallel with the mounting surface.

    • 8

      Force the circuit breaker terminal stabs into their mounting block finger clusters to assure a strong connection. Replace the breaker terminal shields and secure them with four breaker terminal shield screws, tightening them to the proper torque. If the installation instructions require front panel trim, a cutout for the breaker must be provided.