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Old 02-28-2011, 09:36 PM   #1
ExHempKnight
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Default Grounding element vs grounding kettle?

Which is better?

I'm putting my element together. I was originally planning to drill a hole next to the hot lugs, and solder the ground wire into it. I would then pot the whole thin into a pvc coupler with JBWeld.

However, this doesn't seem nearly as easy as potting just the hot wires, keeping the ground wire separate, and connecting the ground wire to a welded ground lug on the kettle.

Is there a difference (electrically)?

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Old 02-28-2011, 11:30 PM   #2
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I put my ground on the bottom of the keg. I debated if I could or should put it on the element itself but there just wasn't much room to make this work. In the end I drilled a hole just large enough for my ground wire to pass through the PVC coupler. I then pulled it through and potted all the wires into coupler with JB weld. After it cured I then attached the ground to the kettle. It seems to be neat and has good continuity.

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Old 03-01-2011, 01:24 AM   #3
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what is the best way in the case of a rubbermaid cooler ? I have seer the copper ring solution, and also someone sugested grounding to the outlet of the ball valve.

In any case, the thing has to be grounded.

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Old 03-01-2011, 01:25 AM   #4
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Well, thanks for the input.

Kind of a moot point though... As I just bit the bullet and did this:



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Old 03-01-2011, 01:26 AM   #5
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Edit: Pics now a more manageable size. Sorry!

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Old 03-01-2011, 02:05 AM   #6
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Hmmm... I see. So you soldered it on there. What was your technique. It seems to have worked well.

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Old 03-01-2011, 04:23 AM   #7
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I drilled the hole with a #10 drill bit until it just broke through the other side. The flange isn't as big on the thread side, so I ended up with half a hole, which was fine (as I only needed to fill solder from that side). I used a small needle file to deburr the hole.

Then I stripped the wire, and tinned it. Then, using a big ass soldering iron (seriously... The thing is like a foot long, and the tip is easily 1/2" diameter) I heated the wire & element flange from the back side, until it was hot enough to fill with solder.

It took a while to heat up. I was originally using a regular sized soldering iron, which would've taken all night. So I grabbed the big one, which took 5 minutes. I kinda blobbed too much solder on, so I had to use a heated solder sucker to clean it up some(An advantage of being an airline mechanic is the access to all kinds of useful tools).

After it had cooled, I cleaned up the gasket flange the rest of the way with a file. Now I just have to pot the PVC coupling with JBweld.

Much easier than I thought it would be.

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