Need help! 48 volt caught fire

[curiouscarbon]

Have you seen Ian take the leads from a series connected PV array and touch the wires? 7:20 mark

"We do things pretty dangerous dangerous around here, we want you to be safe"

175 volt

 

[Samsonite801]

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175 volt

Yeah, I just texted that link to a friend of mine and I fixed the URL so it would start at the right spot for him:

 

[Supervstech]

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175 volt

Your wording made me think he touched the wires himself…

You should add the word “together”

Dc arc is very dangerous with even 2 amps behind it…

 

[curiouscarbon]

Yeah, I just texted that link to a friend of mine and I fixed the URL so it would start at the right spot for him:

thanks for linking the exact time.

the sound and look of that arc give me goosebump!

 

[Hedges]

the sound and look of that arc give me goosebump!

In a good way, or a bad way?
Never use one of these?

 

[Samsonite801]

In a good way, or a bad way?
Never use one of these?


View attachment 77567 View attachment 77566

Hey check this video out:

 

[curiouscarbon]

In a good way, or a bad way?

both

 

[curiouscarbon]

stay safe out there :D

 

[curiouscarbon]

Never use one of these?
View attachment 77567 View attachment 77566

not yet
would like to, one day!

plasma is neat!

 

[Hedges]

Hey check this video out:

63A, 24V shown near the end.

If he keeps that up, he'll get sunburned hands and legs.

I have a lot of trouble getting an arc down around 70A. Mostly I weld up around 120A. Thin stuff and pipes I usually blow holes through.
I rarely weld anymore, but still using the Dayton buzz box I bought 40+ years ago.

 

[GXMnow]

The pure DC from the solar panels probably holds and arc very nicely. I watched that video a while back and it seems to work very well. My little Hobart Mig uses a 2 diode center tapped bridge setup and a moderate capacitor to make DC. It's not the best, but does pretty well on up to 1/8 inch stock. I can do up to 1/4 inch, but it takes a steady hand. One of the diodes blew so it was running just half wave, and it would not hold an arc for crap. It was an easy fix though.

 

[Hedges]

Years ago I bought a 3-phase DC welder at a local auction (for something like $5 plus buyer's premium!)
I removed the big rectifier and capacitor so I could get DC from my buzz box.

It seemed to me an inductor in series could keep the DC going. Might really bite you bad if it hit you, though.