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View Full Version : Can anyone tell me what this symbol is on my welder



azitizz
02-26-2010, 01:05 AM
Hi there, Im just wondering what this symbol is on the back of my welder above a small hole. (sorry bad picture) Im not too familiar with electrical symbols, usually its pretty obvious but this one I cant figure out.

Bob the Welder
02-26-2010, 01:07 AM
I believe that's a ground symbol for an electrical hookup.

BruceTS
02-26-2010, 01:14 AM
yup..... that's a ground symbol

woi2ld
02-26-2010, 01:14 AM
i think the upside down christmas tree is ground. pretty sure. final answer

500HpSilverado
02-26-2010, 01:15 AM
Earth ground

azitizz
02-26-2010, 03:50 PM
Great, thank you. So I guess if I may be working in a moist area or somewhere where there may be risk of shock I should hook up a ground wire?

transit
02-26-2010, 04:37 PM
I would think that it is already grounded through the power plug; the round pin on the plug should be connected to the metal case of the welder. Check for continuity with a multi meter, case to ground pin on the plug?

zopi
02-26-2010, 04:38 PM
alien prison tatoo....

the machine should be chassis grounded through the power cord...usually a green wire...

azitizz
02-26-2010, 04:43 PM
Your right it is already grounded with the power cord I should have realized that. Whats the point of the extra grounding hole/attachement then? Perhaps if the power source doesnt have a built in ground?

lugweld
02-26-2010, 05:07 PM
That is a high frequency ground if it is a tig welder. It should be grounded separately to an outside ground rod.

azitizz
02-26-2010, 05:13 PM
That is a high frequency ground if it is a tig welder. It should be grounded separately to an outside ground rod.

or to your typical in-home ground, like the plumbing?

Stack of Dimes
02-26-2010, 08:06 PM
That's the level you're supposed to submerge the unit in water up to.

azitizz
02-26-2010, 09:42 PM
That's the level you're supposed to submerge the unit in water up to.
Hmmm, I just tried that but all this smoke and sparks started flying everywhere. Now an arc comes out of the torch handle and zaps through my arm and out my cranium and dims the lights. Is it suposed to do that? Maybe I should stand in the water while the machine is running, Ya OK Ill try that first and let you all know how it goes.:p

Stick-man
02-26-2010, 10:59 PM
I always thought it was for an earth ground. On some jobsites I thought they make you bury a rod and you have to connect it to there to ground the machine. I am pretty sure my Honda generators have them also.

papabear
02-26-2010, 11:10 PM
That is a high frequency ground if it is a tig welder. It should be grounded separately to an outside ground rod.

That is what I would think as well. Otherwise it is more likely for the HF to cause interference in more sensitive electric and electronic appliances.

It is definitely a ground symbol though.

And no, not plumbing.

denrep
02-27-2010, 12:29 AM
That's the level you're supposed to submerge the unit in water up to.

That's not funny Stack. You could get somebody hurt.
You know full well that the symbol indicates the level the inside should be filled up to.