How to Wire Sump Pumps

Wiring a sump pump is a fairly simple job if you have a rudimentary knowledge of electricity. The sump pump will usually come with a long cord and a 3-prong plug. Here are some tips on how to wire a sump pump.

Difficulty: Moderately Challenging

Instructions

Things You'll Need:

• 2 by 4 board
• Masonry anchors
• Hammer
• Screwdriver
• Wire strippers

1. Check the local codes in your area to see if a GFCI is required for sump pumps; even if not required, a ground-fault circuit interrupter is a good idea.

2. Run wiring from the service panel to the general vicinity of the new pump, and leave a few feet of slack for ease of installation.

3. Use masonry screws to mount a piece of 2-by-4 to the wall to serve as a base for the electrical box.

4. Position the box high enough on the wall to avoid splashing from the operating pump, and run your electrical conduit to it.

5. Install a grounded receptacle for the plug, wired to a 20 amp breaker. This is important for the proper operation of your pump.

6. Plug in the pump and pour water in the sump. Check to be sure there are no leaks.

Tips & Warnings

• Don’t run anything else on the dedicated 20 amp circuit. The sump pump will fluctuate in the amount of power it draws, and this could cause problems with your lights, computer or other electrical devices.
• Do not wire directly to an extension cord. This is extremely dangerous. If you can’t wire it properly, have an electrician do it.