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Outlet Connection for a 240 Volt Log Splitter


By Dave Rongey - Summary:

How to Adapt a Dryer Circuit for a 240 Volt Log Splitter: Materials List and Instructions to use a dryer circuit to provide power for a 220 Volt Log Splitter.

Make a Dryer Circuit Adapter for a 240 Volt Log Splitter

Electrical Question: I just ordered a log splitter with a 25 amp. 240 volt motor.

Thanks, Ed.

This electrical wiring question came from: Ed, a Handyman from New Fairfield, CT
Additional Comments: Great!!!

Dave’s Reply:
Thanks for your electrical wiring question Ed.

How to Adapt a Dryer Circuit for a 240 Volt Log Splitter

Hi Ed – Great Question and Thanks for the Donation!Circuit Adapter for a 240 Volt Log Splitter

I’m wondering why the log splitter has a 25 amp motor but it has a 20 amp outlet?
Anyway – in a case like this I always have to revert back to the manufacturers design and specifications, so based on that and the possibility of using your dryer outlet lets look at an option. To use the dryer circuit and provide GFCI protection to the extension cord here would be one solution:

 Material List

*Before you purchase the parts make sure everything will fit together and that it all make sense to you.

IMPORTANT
DO NOT PLUG IN THE DRYER CORD DURING ASSEMBLY!

* Wire lengths may need to be shortened as the assembly goes together for a nice neat job.

220 Volt Sub Panel Adapter Assembly

  1. Mount the sub-panel in the center of the plywood.
  2. Attach the dryer cord to the sub panel using the cord connector so that the wires will route to the appropriate lugs easily.
  3. The two dryer cord power lines would connect to the two panel lugs for the power in, and the ground wire to the ground bar accordingly, make sure of the connections.
  4. Attach the outlet box to the sub panel using the offset nipple and lock nuts. It may be best to locate the outlet box below the sub-panel. Screw the outlet box to the plywood.
  5. From the 12/3 Romex (or the separate #12 wires), remove the black, red and ground wire (or use the white wire with green tape to identify it as a ground – it’s safer this way, less bare wire that could come into contact with energized parts)
  6. Attach the #12 wires to the 20 amp outlet, keeping the wire assignments correct, green as ground, (hots can go either way – no problem with polarity)
  7. Install the 20 amp 240 volt GFCI Breaker into the sub panel, position so that it lines up with any panel cover openings, additional openings may be needed.
  8. Route the #12 into the sub-panel and attach the black and red to the GFCI breaker load terminals.
  9. The GFCI breaker will have a ground lead that will attach to the ground bar, and the green ground from the log splitter outlet will attach to ground terminal of the GFCI breaker.
  10. Double check all your connections.
  11. Mount the assembly parts and covers being careful not to pinch any wires.

NOTE
The sub-panel assembly can be temporarily attached to the wall near the dryer outlet, but away from moisture.

I hope this helps you.
More about 220 Volt Electrical Wiring

For more information about 220 Volt Wiring Diagram
220 Volt Wiring Diagram
220 Volt Wiring Diagram
Wiring 220 Volt Electrical Outlet
Home electrical wiring includes 110 volt outlets and 220 volt outlets and receptacles which are common place in every home. See how electrical outlets for the home are wired.



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2 Responses to “Outlet Connection for a 240 Volt Log Splitter”
  1. Dave Rongey says:

    Yes K.K., there are power conditioners available which will supply the desired voltage if this really is a problem. Sola Power conditioners would be one solution, and there are others such as using a buck and boost transformer and adjusting the taps to obtain the desired voltage. Be aware that the line voltage will drift a little from your electric utility company. Before you invest in a power conditioner make sure that the existing circuit is correct and the wire size is right. If any of these components are incorrect then the voltage may actually be pulled down when the saw is operating, especially when it is under a load while trying to cut some material. Also make sure to pay close attention to the manufacturers specifications and the exact circuit size that they are specifying. If you must use a power conditioner or transformer the make sure that is is sized properly as well.
    Dave

  2. K.K. Ullrich says:

    I own a bridge saw that runs on 240 power; the electrician told me that I only have 220. we tried to run the saw on 220 and it is not enough power. do they make something that could boost the 220 to 240? My business just moved and I am dead in the water w/o the saw running.