Technical why do braided lines catch fire when tig welding currect passes through them

the first time it happened I thought a loose ember landed on the Teflon coating and ignited it
it happened again today

why does it happen??
=clutch line, touched the bell housing - poof up it went

 

Path to ground and can't handle the current.

 

Reluctantly one considers resistance!

 

Want to see something similar. to make you think about it. Take some plain steel wool (no soap) and rub it across the posts of a 9 volt flash light battery. It will catch on fire. I imagine the same thing is happening.

 

I know! Watts up with that!?

 

Ohms law rules!

 

My dear Watt son, you wish to Induce a reply?

 

I would hazard to say it would be similar to getting your tig welder ground out through your hand, up your arm, across your chest, and down to the table through your other arm. That will make you turn off the welder, go to the house, sit down and drink a beer, and contemplate life for a few moments.

 

Path to ground will always find lease resistance . It will cook anything that can not handle the current . I have had wedding ring leave a nice burnt circle that takes months if not years to heal up . One time and I promise you will always , clean and be sure you have a good ground before strikin your arc . Again I can not stress , always wear your PPE if it’s just a tack to hold something .

 

And if you have electronic heart management , you probably won't have to worry about sitting , drinking or contemplating ....

 

Keep your ground as close to the arc as possible and make sure it's clamped to a clean spot.

 

I was just going to say pull the tungsten away from your work before you let off the pedal. Hello! You just became what you were welding on. LOL. Lippy

 

This happened twice?

 

I have had that happen when starting a semi truck, the juice shorted through the steel reinforced in the power steering hoses and started a small fire

 

ReVOLTing

 

wow, that sounds like people who dont know how to use a ground clamp.
HOW ARE YOU USING THE GROUND CABLE???

HINT- put the ground clamp where you work.
Why people let welding current pass thru bearings, or hinges, or HOSES, or other delicate stuff is a puzzle to me.
DO NOT put the ground clamp at the far end of the vehicle, or ground it by the hoist cable, or ground-clamp it where it passes current thru bushings, mounts, hinges, bearings, or ANYTHING other than the actual metal you plan to melt.
If you're melting HOSES, then at least jumper across at each end of the hose to carry the misdirected current until you figure out how to send the electricity to the right place by connecting to the work area properly.
Clamping ground to the garage door while hoping the overhead hoist will conduct the current thru the chain, door hinges, wheel bearings, and hoses to eventually get where you weld is not a good idea.

sorry folks. I'm in a real mood today

WHY BE ORDINARY ?

 

Is that what the kids are calling it these days?