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Spot Welding Machine for Double check - outlet installed for Syncro 200

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Platform Spot Welding Machine for Double check - outlet installed for Syncro 200

Double check - outlet installed for Syncro 200


Tue, 31 Aug 2021 09:36:38 GMT
My neighbor (retired electrician) installed a 220v outlet for me just underneath my sub panel.  100 amp sub panel with 60 amp breaker to welder outlet.  The wiring outlet is as follows: Power wires go to breaker, neutral to neutral.  Ground is via conduit to sub panel.  The ground has me curious.    I bought a used Syncro 200 in great shape and it has a 3 prong plug.  (Looking at the manual, it shows a hard wire configuration that goes to ground, but that makes sense.)  I ask because last night I got a little bite when my wrist was on the table when I struck an arc.  I had short cuff/light duty TIG gloves on and long sleeve denim.  While it is possible, I am pretty sure that my skin didn't come in contact with the table, but that it was were the gloves are VERY thin non leather material.  Also, the piece I was working on did not have a great contact with the table (if that matters.  I am a newbee.)  My glove didn't "feel" damp, but it is possible.  It was rainy outside.  My "table" could probably using a grinding down to get a better ground connection too.  Any thoughts?  Does the outlet ground sound right?  Or, is this issue more wet glove issue?     Thanks!KRS
ReplyDouble check - outlet installed for Syncro 200hotos? 1. there is no neutral in a 240v circuit.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Should have 2 hots and a ground on the 3 prong outlet, though right at the sub panel there is very little difference. Welding ac tig with HF you need to be careful where you work clamp is, on the table is not always good enough, put it directly on the part. Cover your skin, and don't touch the table you are grounded to. Shouldn't be a huge issue, except you may have been holding the stinger too far away from the weld area when you hit the pedal, needs to be nice and tight.
ReplyDouble check - outlet installed for Syncro 200id he retire by choice or condition?
Reply:You got bit by the high frequency start.My name's not Jim....
Reply:If I recall the sub should gain ground from the main panel. Got a pic?
Reply:I will see if I can get some pics tomorrow.  Thanks, Kris
Reply:That high freq can knock your dick in the dirt. Not talking about a little tickle, either.
Reply:Seen a lot of electrical circuits that were wired with the conduit as the ground.personally I don't like it. I feel it is always best to have a copper ground wire inside the conduit.One way to limit HF shocks is to have a ground rod next to the welder. A wire then connects to the welder case and the welding table. This makes a better path to ground than you are. So the HF shouldn't jump through gloves and clothes. Look and the HF pages in your owners manual. Shows how to ground a work space to control HF and keep it out of other places.The HF ground rod does not take the place of the electrical system ground rod.
Reply:Here are some pics that I hope help.  I would imagine that you also want to see the outlet wiring, but The cover/outlet was a pain to get on right, so I would prefer to not take that apart for now. Attached Images
Reply:All panels. Attached Images
Reply:I thought I could comment on each pic, but I guess I uploaded wrong.  Anyway....From top to bottom:- Shot of conduit connection coming in to sub panel from outlet.- 3 wires coming from outlet.  (2 go to breaker, one is going to neutral.)  I am assuming the neutral is physically in the 3 connector.  - Neutral bar I believe.  Outlet wire is on the left.- Breaker- overall shot of top of sub panel
ReplyDouble check - outlet installed for Syncro 200ooks all nice and tight- so I assume the receptacle is wired correctly and you just got bit by the HF.Edit: if the sparky did wire up a neutral for the 240v receptacle that is incorrect. It is not causing the shock and won't be a problem UNLESS there is a short and the short uses that Neutral wire.Can you take  spick of the actual receptacle- which type did he use?Last edited by Broccoli1; 01-15-2015 at 12:35 PM.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:I have decided to set up a ground rod outside for table and welder case as suggested.  Will put one just outside garage and go through wall.  Will a wire/clamp mechanism work well for this application?  I can just get another ground clamp like already on the welder.  When I read the manual, I thought this was only to reduce HF interference to electronics.  (I don't think it is clear in the manual of why it is needed.)  So you are saying that does act as a secondary ground/safety function as well?  KRS

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