Getting 120v from 240v circuit?

Reply

  #1  
Old 11-29-19, 02:47 AM
Z
Member
Thread Starter
Join Date: Aug 2019
Location: United States
Posts: 67
Received 1 Vote on 1 Post
Getting 120v from 240v circuit?

I have a large shed in my back yard and I would like to have more power out there. Right now it only has one 15A 120v circuit. The wire to the shed is only 2 conductor (with ground) and it's buried in the ground for over 100 feet. I really do not want to have to bury a bigger wire.

If I used the existing wire, I could double the voltage and make it 240v, thereby doubling the wattage. Unfortunately I need 120v and there is no neutral wire. Is there any other way to tap only one leg to get 120v X2 circuits? I know you're not supposed to use the ground for this, but what if I drive a new ground rod next to the shed and unhook the ground on the other end? Or is it possible to make a "fake" neutral by using a GFCI device?


To sum things up - I want to convert a 120v circuit to 240v for more wattage.from the panel, and then wire it as 2 separate circuits in the shed back down to 120v...but I have no neutral wire to do this.
 
Sponsored Links
  #2  
Old 11-29-19, 03:58 AM
L
Member
Join Date: Nov 2015
Posts: 1,475
Received 71 Votes on 65 Posts
You cannot do what you want without neutral and you cannot use ground as a neutral. GFCI doesn't create fake neutral. GFCI is just a ground fault protection. Driving ground rod will not create neutral and new ground rod still needs to be bonded to ground from your house.

There really is only 2 way I can think of.
1. Run new cable.
2. Install 240V to 120V auto transformer. (will need something big enough for what you plan to put on it)
 
  #3  
Old 11-29-19, 06:07 AM
J
Member
Join Date: Sep 2002
Location: welland ontario
Posts: 7,568
Received 251 Votes on 221 Posts
A new cable is really your only option.
 
CasualJoe voted this post useful.
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: