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Running an extension cord underground...

Posted on 7/10/19 at 7:52 pm
Posted by AU1960
ALABAMA
Member since Oct 2008
3632 posts
Posted on 7/10/19 at 7:52 pm
Anyone ever done it with success.
I'm thinking of running 100 ft to my shed for lighting, bench grinder and other tools. Every thing I've read is no,no,no.
I would only have it plugged in when I am working. Yea or ney?


Posted by Bayou
CenLA
Member since Feb 2005
36811 posts
Posted on 7/10/19 at 7:56 pm to
In a small pvc pipe you should be ok
Posted by papasmurf1269
Hells Pass
Member since Apr 2005
20895 posts
Posted on 7/10/19 at 7:57 pm to
If you were to run it in pipe it may last but if you’re just going to bury it in the ground it won’t.

Posted by AU1960
ALABAMA
Member since Oct 2008
3632 posts
Posted on 7/10/19 at 8:03 pm to
Yes sir I would definitely do pvc. I would like to use 1/2" to protect the cord. Question is without splicing the pipe how can I feed the cord with the plugs? Other than detaching and re- attaching.
This post was edited on 7/10/19 at 8:06 pm
Posted by fillmoregandt
OTM
Member since Nov 2009
14368 posts
Posted on 7/10/19 at 8:06 pm to
Cut one plug off, thread cord through pipe, re-attach plug
Posted by papasmurf1269
Hells Pass
Member since Apr 2005
20895 posts
Posted on 7/10/19 at 8:06 pm to
Get you some 12/2 direct burial Romex and you can just add an end on to it.
Posted by AU1960
ALABAMA
Member since Oct 2008
3632 posts
Posted on 7/10/19 at 8:13 pm to
Thank you for the information.
12/2 sounds like the best option.
Posted by wickowick
Head of Island
Member since Dec 2006
45805 posts
Posted on 7/10/19 at 8:24 pm to
Why are you going to spend all the time to dog a hole to bury an extension cords when it probably isn’t much more to do it right?
Posted by CottonWasKing
4,8,15,16,23,42
Member since Jun 2011
28626 posts
Posted on 7/10/19 at 8:31 pm to
quote:

Why are you going to spend all the time to dog a hole to bury an extension cords when it probably isn’t much more to do it right?


Exactly. If I’m digging a trench I’m going to go ahead and run Romex it’s not that hard to do.

Well I’ve never done it before but I know of a methhead who got arrested for running a romex line from his neighbors shop to his house because his power got shut off.

Surely if he could pull that off it can’t be that hard
Posted by Geauxtiga
No man's land
Member since Jan 2008
34377 posts
Posted on 7/10/19 at 8:50 pm to
Before you connect your pipe, lay it out on the ground (next to the trench) and run your cord through one section at a time, then connect them.
Posted by East Coast Band
Member since Nov 2010
62786 posts
Posted on 7/10/19 at 9:04 pm to
Make sure you mark it somehow. I wouldn't want to have left the cord plugged in and then later on go to dig a hole for some tomato plants in the wrong spot.
Posted by keakar
Member since Jan 2017
30008 posts
Posted on 7/10/19 at 11:16 pm to
I'm thinking of running 100 ft to my shed for lighting, bench grinder and other tools.

use 1" pvc electrical conduit (3/4" is too tight to feed the wire) and use the long sweeping 90s for it at the end to come up.

for the wire use 10-2 with ground would handle this fine with 30A breaker, but if it was me, i would do 8-2 with ground and 40A breaker just to be sure in case one day i wanted run something like a compressor that needs more power

just like with trailers, its always best to go bigger then you think you need.
Posted by EveryoneGetsATrophy
Member since Nov 2017
2907 posts
Posted on 7/11/19 at 6:52 am to
Dont run any wire underground with a paper insulation inside of it.
This post was edited on 7/11/19 at 7:13 am
Posted by bee Rye
New orleans
Member since Jan 2006
33961 posts
Posted on 7/11/19 at 7:17 am to
quote:

I'm thinking of running 100 ft to my shed for lighting, bench grinder and other tools. Every thing I've read is no,no,no.
I would only have it plugged in when I am working. Yea or ney?

I would run some UF cable, and just break it down into a light switch and a few receptacles in the shed
Posted by HubbaBubba
F_uck Joe Biden, TX
Member since Oct 2010
45760 posts
Posted on 7/11/19 at 7:19 am to
Sounds more to me like he just wants to plug it in to an existing outlet, not run a box off the main.
Posted by kengel2
Team Gun
Member since Mar 2004
30778 posts
Posted on 7/11/19 at 8:04 am to
quote:

Running an extension cord underground...


No.

And dont put romex nm or uf in a pipe either.

Get some thhn and put that in a pipe.
Posted by Geauxld Finger
Baton Rouge
Member since Jan 2005
31719 posts
Posted on 7/11/19 at 9:09 am to
Buy some conduit and or pvc and run it inside that
Posted by fishfighter
RIP
Member since Apr 2008
40026 posts
Posted on 7/11/19 at 9:27 am to
Don't even think of doing that even running it in PVC pipe.
Posted by HubbaBubba
F_uck Joe Biden, TX
Member since Oct 2010
45760 posts
Posted on 7/11/19 at 10:08 am to
quote:

for the wire use 10-2 with ground would handle this fine with 30A breaker, but if it was me, i would do 8-2 with ground and 40A breaker just to be sure in case one day i wanted run something like a compressor that needs more power
Jesus, dude. 40 amps to run a 15 amp compressor?
Posted by keakar
Member since Jan 2017
30008 posts
Posted on 7/11/19 at 12:21 pm to
quote:

Jesus, dude. 40 amps to run a 15 amp compressor?

given the situation where he has lights on using bench grinder and a compressor kicks on he could easily be tripping a 30A breaker

just because you have the extra capacity doesnt mean you always use it but if you max out what you have it can cause all sorts of issues

you have 200A to your house and yet you never use half that
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