T
T.M.Haja Sahib
Guest
It is only a request.(Please see 'Please' in it.)
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.
It is only a request.(Please see 'Please' in it.)
Please control yourself and grasp what is stated in post # 75. :slaphead:
What is more,I and iwire are of equal age and almost are friends.
It isn't I to whom you ought to direct an apology.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.
It isn't I to whom you ought to direct an apology.
Why should I ?Don't expect a card on your birthday.
I like to work with facts and not just facts from other accident I deem to be 'similar'
I don't care about the way you work.
I am not.
Not what, TM?
But you apologised to the wrong person.I am not deviating from the way you sometimes tender apology,Bes.
But you apologised to the wrong person.
Two wrongs etc........Like you,Bes, in another thread.
Two wrongs etc........
Ach, .........never mind.
I feel bad because you get hurt easily which in turn hurts me.
Going back to the link by Iwire in post #62 the welder appears to have been electrocuted by getting the 78.8V output across him.
It isn't really to do with grounding. The current path was from one terminal through man's body and back to the other terminal.
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.
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.