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Beginner on a Hobart Handler 140 but I have an electrical background (electronics tech in the USN). I am very safety conscious and have a healthy respect for electricity. I always glove-up and turn the machine off every time I need to make an adjustment. Then I see a guy in this Youtube video handling the metal bare-handed while welding (time 1:26-1:40) and I don't understand how he not taking a shock. I have to ask:- Would you feel safe doing this?- Do many of you Mig like this?
Reply:I can't see your video, but I do all the time. I wear gloves to avoid sunburn. Shock is rare, I only avoid being in a place where I'll be shocked. I consider welder shock to be unpleasant, not life threatening. My opinion. I'm not saying it should be your opinion.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:Nothing to worry about, I do it all the time.You are welding with low voltage DC, pretty rare to get shocked with mig - can't remember ever having it happen.Now with AC stick welding I've been shocked several times when damp - mostly an annoyance.DC stick welding you can get zapped too - I just haven't yet.Tig is easy to get zapped with due to high frequency start and stabilization.Also unnecessary to shut off a machine to make adjustments to it. It needs to run for the fan cooling anyway.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Road trip, the skin on a human body has a natural resistance to around 50V. Thus, unless your hands are wet you can safely tough lower voltage items w/o getting shocked. Most welding equipment welds at a voltage much lower than 50V.In Telecom, 48VDC is commonly used to power switching and cell site equipment. Most folks can safely handle both wires simultaneously w/o getting shocked.Miller Trailblazer Pro 350DMiller Suitcase MIGMiller Spectrum 2050Miller Syncrowave 250DXLincoln 210MP
Reply:
Originally Posted by scsmith42
In Telecom, 48VDC is commonly used to power switching and cell site equipment. Most folks can safely handle both wires simultaneously w/o getting shocked.
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Originally Posted by MinnesotaDave
Nothing to worry about, I do it all the time.You are welding with low voltage DC, pretty rare to get shocked with mig - can't remember ever having it happen.Also unnecessary to shut off a machine to make adjustments to it. It needs to run for the fan cooling anyway.
Reply:The reason the guy in the video didn't get bit is he wasn't making himself part of the electrical path from the gun/stinger and the ground/ earth. If you want to experience it just spit in your hand and hold a 7018 rod in the stinger w/ that hand and touch the work piece with the other hand. You are now part of the electrical path!!MikeOl' Stonebreaker "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
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Originally Posted by frieed
True, but the ringer pulse can light you up. ask me how I know
Reply:Agree with what was said above...low voltage (16-28v generally), DC not AC, not making himself part of the circuit. The other thing to remember is the gun is only energized while you pull the trigger on most models. So no need to turn the machine off really. Wearing gloves to prevent shock in this case would be like wearing gloves when changing a car battery to prevent shock.Miller Multimatic 255
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Originally Posted by frieed
True, but the ringer pulse can light you up. ask me how I know
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Originally Posted by Oldendum
So can a lawnmower ignition coil, like when the plug is fouled/shorted, so you take it off and hold on to the spark plug wire.
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Originally Posted by RoadTrip
Beginner on a Hobart Handler 140 but I have an electrical background (electronics tech in the USN). I am very safety conscious and have a healthy respect for electricity. I always glove-up and turn the machine off every time I need to make an adjustment. Then I see a guy in this Youtube video handling the metal bare-handed while welding (time 1:26-1:40) and I don't understand how he not taking a shock. I have to ask:- Would you feel safe doing this?- Do many of you Mig like this?
Reply:
Originally Posted by frieed
True, but the ringer pulse can light you up. ask me how I know
Reply:Quick tacks with a Mig welder - just position the nozzle, close your eyes, bump the trigger, move on.Not a big deal.
Reply:If this bothers you, you should check out Allen's channel. The guy is a maestro as far as I am concerned, but his welding without gloves or a hood kind of makes me worried for him LOLhttps://www.youtube.com/channel/UCLV...OoNd7rg1CfnKlwMiller Multimatic 255
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Originally Posted by kize
Id be more worried about no hand and eye protection.
Reply:You can really feel it on HF start on a TIG, but that's low current. Higher frequency really increases the ability take multiple paths to ground. Don't be one of those paths. Get up into radio frequencies and you don't even need to make contact to get burnt. DC is zero frequency.I always always wear gloves, but just to limit burns and cuts. I usually just use those stretchy disposable aramid yarn ones that are rubber coated, and switch to heavy leather stuff only when I'm at very high amps.Everlast 350 EXT - Thermal Dynamics Cutmaster 52 - Rogue Fabrication M600 xHD tube benderMilwaukee 4208 Mag Drill - Shopmaster Eldorado Combo mill/lathe machine with DRO.
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Originally Posted by bigb
Especially if you are stripping the wire with your teeth
Reply:If you hold onto a rod in one hand and the ground with bare hands you will get zapped. Your hand doesn't have to be wet. One of the 1st things learning welding is the voltage won't kill you. The teacher made everyone do this. Several years later I asked him if he still did it and he said no because he got zapped really bad one time. The reason you don't get zapped holding a piece is the same reason multiple welders can be used on the same weldment. Electricity takes the shortest path and you aren't part of that circuit.
Reply:Being wet dosent do much, but when you're sweaty 65+ volts of a stick welder will get you pretty good.Clean water is an insulator, add salt and you can flow lots of current even at low voltages.
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Originally Posted by Chad86tsi
You can really feel it on HF start on a TIG, but that's low current. Higher frequency really increases the ability take multiple paths to ground. Don't be one of those paths. Get up into radio frequencies and you don't even need to make contact to get burnt. DC is zero frequency.I always always wear gloves, but just to limit burns and cuts. I usually just use those stretchy disposable aramid yarn ones that are rubber coated, and switch to heavy leather stuff only when I'm at very high amps.
Reply:There is a thread I have going in the welding processes forum on repairing a Century 80 flux core machine. The welder over-heated last summer during a big project. After the unintentional thermal event I noticed a shock from the unit when plugged in, not even on. It still welded so I left it alone (not really a smart idea). I had to get through my project and that required a cross-country trip to some cabins to finish the job there also. I just kept on keepin' on with what I had how I had it. When I opened up the machine and started working on it I found the hot wire from the input cable had melted in to the wire connection that goes to the torch. The shock I was getting was the hot 120v line back-feeding through the secondary to the work clamp. Aside from that predicament (a melt down causing a problem) - I have never had a shock from welding with equipment in good maintenance.
Reply:If you do get shocked from welding equipment. Get a digital multi-meter and try to measure the voltage. test both AC and DC volts. The voltage amount and whether its AC or DC. Will tell a repairman where to look for the problem, if it is a problem.Test at the two contact points you were shocked from. Like the measurement is 40 VAC This could be an open ground. On some welders the case will float about 40VAC above ground, if the case is not connected to earth ground. Some TIG welders split the OCV to ground so neither weld terminal is to high. above ground.
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Originally Posted by 2strokeforever
Being wet dosent do much, but when you're sweaty 65+ volts of a stick welder will get you pretty good.Clean water is an insulator, add salt and you can flow lots of current even at low voltages.
Reply:It is rubber shoes maybe socks the list goes on.But remember it luck on not getting shocked.I treat all electrical as live and will kill. I have work with 480 volts.Even welding power I treat as it can kill.I work with power safely since 1960'sWork safe Dave
Originally Posted by RoadTrip
Beginner on a Hobart Handler 140 but I have an electrical background (electronics tech in the USN). I am very safety conscious and have a healthy respect for electricity. I always glove-up and turn the machine off every time I need to make an adjustment. Then I see a guy in this Youtube video handling the metal bare-handed while welding (time 1:26-1:40) and I don't understand how he not taking a shock. I have to ask:- Would you feel safe doing this?- Do many of you Mig like this?
Originally Posted by frieed
True, but the ringer pulse can light you up. ask me how I know
Reply:Phone is about 70 voltsIt will shock you.It considered low voltage and voltage above 70 volts is not low voltage.Dave
Originally Posted by wmgeorge
As I recall its 105 volts and pulsed DC depending on the phones ringer it can be 66, 33 or other pulse rate I can't remember.
Reply:Unless you talk to a sparky, most of those guys consider anything 220 and Below low voltage.
Reply:NEC low voltage is 70 volts and below.
Originally Posted by Fnord5
Unless you talk to a sparky, most of those guys consider anything 220 and Below low voltage. |
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发表于 2021-9-1 23:14:24