How to Install a Marine Power Inverter

Written by will charpentier
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How to Install a Marine Power Inverter
Bring on-board some more comforts of home. (motorboat image by Dave from

Adding an inverter to your boat's electrical system gives you the capability to use common, 110-volt AC household appliances, like an electric stove or a wide screen television, aboard your boat. The inverter also acts as a battery charger when it's not being tasked with providing power for your toys and appliances. The newly added inverter will give you the chance to enhance your boating experience by taking a bit of "shore-side" entertainment on your excursions.

Skill level:

Things you need

  • Pencil
  • Drill
  • Adjustable wrench

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  1. 1

    Set the power inverter on the shelf where you propose to mount it. Use a pencil to mark the location of the mounting holes on the inverter's base onto the shelf. Remove the inverter.

  2. 2

    Use a drill to drill holes in the shelf for the mounting bolts. Set the inverter in place on the shelf and use an adjustable wrench to bolt it to the shelf with the mounting bolts that are supplied with the inverter.

  3. 3

    Remove the nut from the positive battery post of the first battery in the bank. Slip the ring terminal on the end of the battery converter's red (positive) wire over the battery's positive terminal. Replace and tighten the nut, so the nut is hand tight.

  4. 4

    Remove the nut on the negative battery terminal and slip the ring terminal on the inverter's black cable over the negative battery terminal. Replace and tighten the nut on the terminal, so the nut is hand tight.

  5. 5

    Connect the red power lead of the inverter to the shore power/inverter connection on your boat's AC electrical panel by unscrewing the connection screw with a screwdriver, wrapping the lead around the screw clockwise, then tightening the screw. Attach the black (ground) lead from the inverter to the boat's common ground.

Tips and warnings

  • Never shorten the leads on the inverter.
  • AC ground wires aboard ship are black. DC ground wires are yellow.
  • Do not mount the inverter below the batteries. Batteries give off an explosive gas when in operation and if the charger is below the batteries, a fire could result.

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