Return to the Electrical Wiring Forum | Post a Follow-Up

240V wiring in shed with irrigation pumps

Posted by Cdaddy (My Page) on
Mon, Apr 2, 12 at 15:39

Hello All,
I am hoping to get some questions answered after doing some reading on your forum about 240V wiring. I have a shed that is about 250 ft from the house. I have torn the shed down in order to replace it. It has 2 hot leads (240V) that run irrigation pumps that are switched on and off up in the house next to the breaker box. There is also a 12/2 with ground run out for lights and outlets.
I have more power needs and wishes than what the 12/2 can provide so what I would like to do is, move the 240V irrigation on/off switch into the shed and use the 12/2 as the signal wire to control it. I would then power a sub panel with the (2 hots) 240V and put the on/off switch for the irrigation pumps after it. The only issue with this, is there is no neutral and no ground run out to the shed just 2 hots.(I'm thinking a sub panel needs a neutral) I could drive a ground rod to provide a ground path but I'm just not sure that will fly. Its way too far to run more wire to the shed from the house considering the whole area has irrigation too. Any ideas or insight would be greatly appreciated.

Follow-Up Postings:

RE: 240V wiring in shed with irrigation pumps

You need 4 wires to feed the sub-panel in a separate building.

Two hots, one neutral, one ground.

You will also need a grounding electrode system for the building.
That usually ends up being two ground rods and the wire to connect them to the panel.

If you have conduit you can see if you can fit the new wires in.

RE: 240V wiring in shed with irrigation pumps

Thanks Brickeyee, No conduit, all the wire is direct buried. Looks like I will have to leave things as is until I can afford having a new path placed

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here