When electrics go wrong!!!

[telectrix]

That's always worked for me. Mention smoke, and they're on site within the hour.

mention beer/tea/biswits, and they're there in 15 minutes.

 

[pc1966]

Had a similar one about a year ago, welding something hanging off a chain hoist .
earth clamp was not attached correctly.

I have never had to play with an electric welder (other than a hour or two training as a student) so I would assume the high current secondary is not earthed to avoid a direct burn-out of the welder's earth. Or is it?

So was it two metal objects linked via conduit/CPC, and the welder's clamp was on one and the electrode arcing to the other?

 

[James]

Don’t know, it is a customers mine.
it might be that the earth clamp was touching a piece of bonded metal.
i wasn’t there when it happened, just saw the damage afterwards.

 

[ipf]

These are the result of some nincompoop car lift 'engineer' reckoning he could change a faulty Bradbury car lift starter. He had a fair few efforts, too.

 

[Doomed]

This DB has been here decades, then a few weeks back a smart meter got fitted, my guess is the oik who did the meter pulled the tails about and made a loose joint occur.

 

[DPG]

View attachment 84107
This DB has been here decades, then a few weeks back a smart meter got fitted, my guess is the oik who did the meter pulled the tails about and made a loose joint occur.

Tricky switching that one off !!

 

[pc1966]

That is a pretty impressive display of why CU installation has to be done right!

The old Wylex boards had double-screws on the main cables (tails) as far as I remember, so it takes that bit more than one mistake to go wrong.

 

[Dave OCD]

I bet you're spot on with that theory ! That would have been the new 'improved' Wylex back in the day with single screw main switch and neutral bar terminals....

 

[ipf]

The old Wylex boards had double-screws on the main cables (tails) as far as I remember, so it takes that bit more than one mistake to go wrong.

They had double screws on every connection except the earth bar, didn’t they.
Certainly reduced the chances of a connection problem more than some of today’s lovely jubblies.

 

[littlespark]

That would have been a fright at 11pm when the board went live.!