T
T.M.Haja Sahib
Guest
What is more,I and iwire are of equal age and almost are friends.We simply tease each other and if that appears rude to you,I tender my apology.
Welder Grounding
- Thread starter Eng
- Start date
- Status
What is more,I and iwire are of equal age and almost are friends.We simply tease each other and if that appears rude to you,I tender my apology.
- Location
- Massachusetts
I saw what it said.
You feel that guessing about accident is a good way to develop a program. I disagree, I like to work with facts and not just facts from other accident I deem to be 'similar' I mean facts about the actual accident in question.
But by all means build a program on good intentions, I am sure it will be great. :thumbsup:
- Location
- Massachusetts
Don't expect a card on your birthday.
It isn't I to whom you ought to direct an apology.
T
T.M.Haja Sahib
Guest
I am not.
T
T.M.Haja Sahib
Guest
Why should I ?
T
T.M.Haja Sahib
Guest
I don't care about the way you work.
- Location
- Massachusetts
That is understandable, why should you.
Of course you where asking questions on an open forum so you get to hear both what you want and often what you do not want to hear as well.
Not what, TM?
T
T.M.Haja Sahib
Guest
I am not deviating from the way you sometimes tender apology,Bes.
But you apologised to the wrong person.
T
T.M.Haja Sahib
Guest
Two wrongs etc........Like you,Bes, in another thread.
Ach, .........never mind.
T
T.M.Haja Sahib
Guest
I feel bad because you get hurt easily which in turn hurts me.
- Location
- Massachusetts
Enough with this, stay on topic or be deleted.
kwired
Electron manager
- Location
- NE Nebraska
Exactly. The welder output is an ungrounded system. Clamp the work lead on a piece of equipment and it may or may not be grounded. The work is definately now an extended conductor of the work lead though. Care need to be taken to not become part of the current path. This should be taught to anyone learning to use a welder, just like rules of the road and hazards associated with driving are taught to anyone learning to drive.
Wow. At lot of responses. I haven't gone through them yet. But this is a requirement from ANSI. Providing this is good practice if you are performing welds on vehicles that have sensitive electronic equipment (fire trucks and police vehicles) and also vehicles that contain explosives (paint trucks).
I ended up providing a copper busbar mounted to the wall of the welding room. I connected the copper busbar to the building structural steel. The owner will now connect the welding table and any vehicles that they are welding on to this busbar. This is in addition to the equipment grounding conductor and the workpiece ground.
Workpiece ground
According to ANSI Z49.1, "e;Safety in Welding, Cutting and
Allied Processes,"e; the workpiece or the metal table that the workpiece
rests upon must be grounded. We must connect the workpiece or work table to a
suitable ground, such as a metal building frame. The ground connection should
be independent or separate from the welding circuit connection.
Grounding the workpiece has similar benefit to grounding the
welding machine enclosure. When the workpiece is grounded, it is at the same
potential as other grounded objects in the area. In the event of insulation
failure in the arc welding machine or other equipment, the voltage between the
workpiece and ground will be limited. Note that it is possible to have an
ungrounded workpiece, but this requires the approval of a qualified person.
I ended up providing a copper busbar mounted to the wall of the welding room. I connected the copper busbar to the building structural steel. The owner will now connect the welding table and any vehicles that they are welding on to this busbar. This is in addition to the equipment grounding conductor and the workpiece ground.
Workpiece ground
According to ANSI Z49.1, "e;Safety in Welding, Cutting and
Allied Processes,"e; the workpiece or the metal table that the workpiece
rests upon must be grounded. We must connect the workpiece or work table to a
suitable ground, such as a metal building frame. The ground connection should
be independent or separate from the welding circuit connection.
Grounding the workpiece has similar benefit to grounding the
welding machine enclosure. When the workpiece is grounded, it is at the same
potential as other grounded objects in the area. In the event of insulation
failure in the arc welding machine or other equipment, the voltage between the
workpiece and ground will be limited. Note that it is possible to have an
ungrounded workpiece, but this requires the approval of a qualified person.
kwired
Electron manager
- Location
- NE Nebraska
Modern vehicles have so much electronics in them that you will want the work lead as close as practical to the work to prevent current from flowing on almost anything you can imagine. They usually recommend disconnecting the vehicle from the battery to also help minimize potential paths.
In addition to keeping the work lead close to the work, you must also provide a Ground Clamp from the work to the additional grounding busbar that is provided part of the ANSI requirment.
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