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Old 12-19-2011, 08:52 PM   #1
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I want to make something for my hobby room so I can plug in small tools, and anything else needed at the time at my desk.
I know a pretty good amount about electric, but want some backup. I have seen online DIY extension cords. They do not look safe at all, but I'm confident if I do it right my way, and follow code somewhat, they will be fine. All components would be UL/ETL listed and appropriate clamps would be used.

I wanted to make something like this using 12/3 SJOOW wire, 2 gang outdoor boxes, and a few outlets with a grounded plug on the end. A switched outlet would terminate too for a light. If I did it correctly, is there any problem?
It will be mounted on the wall (surface mount, nothing special) and plugged in about 10ft to a regular outlet.


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Last edited by workhorse15; 12-19-2011 at 08:54 PM.
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Old 12-19-2011, 08:59 PM   #2
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Why not just buy a power strip?

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Old 12-19-2011, 09:30 PM   #3
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Why not just buy a power strip?
Because I could never find any that were built well AND had a long enough cord to reach without having to use another extension cord. The ones that were nice, heavy duty, and had a long cord also range from 3-15ft long themselves!

I just wanted something on the cheap side, long heavy cord, and small. Figure I would just make one that exactly fits my needs with no coiled up extension cords, and somewhat permanant and safe.
http://imageshack.us/photo/my-images/195/boxthing.jpg/

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Old 12-19-2011, 09:35 PM   #4
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You can certainly do it. It will not be cheaper than finding some solution using power strips.
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Old 12-20-2011, 06:05 AM   #5
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As long as you use the correct parts, and everything is wired correctly (correct gauge wire, grounded, strain reliefs) it will be fine. Make sure when you run the wire up to the "light?" that it is secured so it doesn't get pulled and fall down on you!

I did this for my garage. It has 12ft 12/3 SJOOW and goes to a 2 gang box with commercial outlets for a few tools. The only dedicated outlet in my garage is 12ft away :P
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Old 12-20-2011, 06:32 AM   #6
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I suggest using a GFCI as one of the duplexes and have the other protected by it. Safer that way. I built one of these to use for temporary power when doing service changes, building re-mods, etc.
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Old 12-20-2011, 06:35 AM   #7
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I was just going to suggest the same thing. I made a long one similar to that, but I put a GFCI on it.

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Old 12-20-2011, 08:19 AM   #8
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I built something like that to have more places to plug in power tools while building my house. Since it would sometimes be outside, I used a waterproof box and outlet covers.
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Old 12-20-2011, 09:26 AM   #9
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maybe install a cord grip/strain relief where it enters box
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Old 12-20-2011, 02:51 PM   #10
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Thanks everyone for their input!
Yes, I think I will install a GFCI. Seperate of the switched outlet for a light, but I think a GFCI would be ideal since I work with alot of tools.

Should I bother using outdoor weatherproof boxes, or would a basic 3 gang metal box work.
In the box will be:

-1 GFCI which also controls 1 basic heavy duty outlet
-1 switch that controls an overhead light.
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Old 12-20-2011, 02:58 PM   #11
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Quote:
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Should I bother using outdoor weatherproof boxes
If you ever plan on using it outdoors, I would recommend it.

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Old 12-20-2011, 03:11 PM   #12
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If you ever plan on using it outdoors, I would recommend it.

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Its only going to be use indoors and mounted permenatly. So I guess I will just use metal boxes.

"I want to make something for my hobby room so I can plug in small tools, and anything else needed at the time at my desk."

"It will be mounted on the wall near my desk (surface mount, nothing special) and plugged in about 10ft to a regular outlet. "
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Old 12-20-2011, 03:39 PM   #13
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If you are mounting it permanently, that's a whole new issue. Why not just install an outlet where it needs to be. I'm not sure [but I know someone else is] as to the legality of permanently mounting the box, and running an extension cord to it. Might border on "hack DIY electrical work" even though you are essentially just looking for a power strip with a long cord.
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Old 12-20-2011, 04:20 PM   #14
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If you are mounting it permanently, that's a whole new issue. Why not just install an outlet where it needs to be. I'm not sure [but I know someone else is] as to the legality of permanently mounting the box, and running an extension cord to it. Might border on "hack DIY electrical work" even though you are essentially just looking for a power strip with a long cord.

I don't see the difference if I was to find a power strip and mount it or make my own customized "super duty" one. I'm not going to start ripping down drywall, patching, and painting for such a small problem, even though I need to find a solution. Nor, can I put out alot of money for it. The DIY box was only going to be about $30 total. I've tried Wiremold before, and ripped it down because I hated it. Fell apart, messy, etc. Returned it. Never will touch it again.

I don't see a reason why I can't "mount it". Isn't that why power strips have mounting holes? I've seen so many other people do it. Even stores. I was just at Target a few days ago, and they had big black extension cords dangling in the ceiling down to boxes mounted on the walls for freezers.

If I was to use regular conduit (metal or plastic?), is there a way I can "surface install" it without going into the wall. (ie. Connect an extension box on a plastic in wall box, run conduit and put Romex in it to where I need it.
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Old 12-20-2011, 04:39 PM   #15
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Quote:
Originally Posted by workhorse15 View Post
If I was to use regular conduit (metal or plastic?), is there a way I can "surface install" it without going into the wall. (ie. Connect an extension box on a plastic in wall box, run conduit and put Romex in it to where I need it.
Wiremold makes quite a bit of stuff for this type of application.

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