Extension cord for Jointer & Planer

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Forum topic by GravyBones posted 05-17-2015 03:54 PM 739 views 0 times favorited 0 replies Add to Favorites Watch
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05-17-2015 03:54 PM

I must first start out that I shall not be running both jointer and planer at the same time.

I made an extension cord that goes from one wall outlet in a garage to a dual l6-20R receptacle box. It can be done on an outdoor grade 2-gang box. I used 20 feet of 10/3 SOOW 300V rubber cord. I also made two 25 foot lengths of 10/3 SOOW 300V rubber cord with L6-20P plugs on the ends for when my Grizzly jointer and planer arrive, if they ever do. G0453 and G0490X.

I had to make a special metal plate on top and bottom of the receptacles to space them out just a little more than standard 2-gang widths. Because it was just a slight width increase I had to dremel the existing screw holes in the box because they were in the way of the nuts that held the receptacles onto my plates. The other half of the screw hole posts are still there for even more support. This is very solid construction. There is a lot of gap between the two receptacles. Additionally I carefully used 3m electrical tape around the receptacles wire screws.

This is a very solid build and quite durable. The box is all aluminum outdoor type. The receptacles and plugs are heavy duty Legrand type. I used a compression cord fitting on the box that goes to the wall outlet. I will wire the 25’ plug pigtails I made to the machines when they arrive. The machines come with a 12 gauge 5 foot cord and plug. What use is a five foot cord I thought. Anyway. I am over on the 12 gauge requirement by using 10 gauge, which is good. I am under 50 foot cord length total, which is good. Both the planer and jointer have a 12 gauge 15 amp draw with 20 amp breaker requirement at 240V 3 wire single phase. I will make a cover plate once I cut out the holes for the receptacles. I have a outdoor sealed cover plate waiting. The plug ends have a neat rubber seal inside that fits over the cord to keep dust out. I will move my machines around a lot and needed this extension for such operation in the garage.

Here are some pics. Chime in if you see a problem.


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