My 89 Camaro Project

[robertisaar]

Man, I just welded a bumper for a 4-wheeler, and the TIG would pwn something like that...

Just make sure you don't get sunburn haha. 250amps@240v is extremely HOT.

250A X 240V = 60,000Watts?!?!

[Superdave]

250A X 240V = 60,000Watts?!?!

It shouldn't be 240V @ the tip though, probably a lot less. Welders are all about high current, low voltage.



I agree though, welding burns are never fun.

[3400-95-Modified]

IIRC Welders put out 15-30vdc depending on the size of the welder.

A Miller 250a is 28vdc So 7000 watts... Still a good amount.

[ForcedFirebird]

IIRC Welders put out 15-30vdc depending on the size of the welder.

A Miller 250a is 28vdc So 7000 watts... Still a good amount.

Right DC is more dangerous than AC. My Miller peaks at 300amps and 32v iirc.

Back OT, Dave they at least tacked yet?

[Superdave]

They were but i wasn't happy with how they were turning out. I'm going to ditch the stock GM rubber mounts and start over from scratch.

[sprucegagt]

Right DC is more dangerous than AC.

Not true when it comes to voltage amounts.

[3400beretta]

Not true when it comes to voltage amounts.

Actually, it is true. Maybe you are saying not at that voltage level? But DC can more easily cause fibrillation and is much more dangerous than AC.

[3400-95-Modified]

Its not the volts that kills ya, its the AMPS... lol

[robertisaar]

Its not the volts that kills ya, its the AMPS... lol

yar.... isn't it something like .1 Amps at the chest will stop your heart?

[3400-95-Modified]

yar.... isn't it something like .1 Amps at the chest will stop your heart?

5 miliamps Across the heart... Ok enough OT...

Get building Dave!

[Superdave]

Its not the volts that kills ya, its the AMPS... lol

it's a combination of both.


you need to have enough voltage (pressure) to get over the resistance of the human body.

step 1: Use a multimeter to test the resistance of your body, thumb to thumb (dry).

Then solve...

V=I*R

R is the resistance of your body, I is the accepted .015A needed to disrupt the heart's rhythm.

Then you'll know how much applied voltage it would take to pass enough current through your heart to stop it.


Back to the car.. shift kit was ordered yesterday, ordering tires tonight and materials to build new motor mounts.

[bszopi]

Back OT... I was lucky enough to be inspecting a 208v/3ph, 3000A switchboard the other day for work. Enough volts and amps to kill me pretty easily. But, at least I was out of the office for a couple days.

On-topic... you should fab up some solid mounts like I'm planning.

[Superdave]

Back OT... I was lucky enough to be inspecting a 208v/3ph, 3000A switchboard the other day for work. Enough volts and amps to kill me pretty easily. But, at least I was out of the office for a couple days.

On-topic... you should fab up some solid mounts like I'm planning.

Solid mounts is the direction i decided on after seeing the prices for poly bushings. I've got plenty of 2" square stock and plate steel. Just need some blades for the sawzall.


OT, my job usually has me getting shocked weekly, usually it's something like a 400V capacitor discharging into my finger but occasionally i catch a buzz off of a CRT tube. 30kv is better than coffee in the morning.

[pocket-rocket]

occasionally i catch a buzz off of a CRT tube. 30kv is better than coffee in the morning.

I remember discharging those with a jumper clipped to a flat headed screwdriver. I thought they ran around 40-50k? Then again, these were TV's and IIRC, the larger the TV, the more voltage the CRT needed to run. Getting bit by 600v riding on a heat sink while converging a big screen while talking to a customer on the phone... Now that was fun...

[sprucegagt]

Actually, it is true. Maybe you are saying not at that voltage level? But DC can more easily cause fibrillation and is much more dangerous than AC.

No it's not, at least not in the sense I'm thinking. I used to test equipment for Underwriters Laboratories and other agencies. The standards used for testing explicitly call out the maximum allowed voltages that a user can come in contact (32 Volts rms, 42.4 Volts p_p, 60 Volts DC). These are the voltages were people start getting hurt.

Sorry for going OT again Dave.