Workshop electrical wiring upgrade advice

[Asmdeus]

Hi Everyone,

I have recently purchased a spot welder- Celette Scorpion 2400R.
Plugged it into my three phases and it blew fuses(3x20A) with the first weld attempt.
Changed old fuses like for like with new ones and tried the machine on the lowest setting, then upped it, and fuses were blown once again, so it's clear I need some upgrades.

The machine has settings from 0.8mm to 3mm, I got to 1.5mm and the fuses went.
I'm attaching pictures of the current setup. I also wanted to make another three-phase socket about 15m away from what you see in the pictures.

Thank you for all bits of advice.

 

[UNG]

And the machine load spec is????

 

[Lucien Nunes]

You seem to have a 32A socket protected by 20A fuses, rather than the expected 32A. Where does the supply come from and what do you know about its characteristics? That might be the limiting factor as to how much you can increase the fuse rating. What fuse does the welder manufacturer recommend? Aside from the current rating, are they supposed to be slower than the gG fuses fitted now?

On a separate note I am not 100% convinced by what I can see of the earthing. It might be local TT in which case the body of the fuse-switch shouldn't be connected to the supply earth if that's TN, but it doesn't seem to be connected to the earth passing through either. Or if it's earthed via the armour, why isn't the green/yellow cable connected to the casing stud? Presumably the DB is connected to the MET below it?

 

[telectrix]

You seem to have a 32A socket protected by 20A fuses, rather than the expected 32A. Where does the supply come from and what do you know about its characteristics? That might be the limiting factor as to how much you can increase the fuse rating. What fuse does the welder manufacturer recommend? Aside from the current rating, are they supposed to be slower than the gG fuses fitted now?

On a separate note I am not 100% convinced by what I can see of the earthing. It might be local TT in which case the body of the fuse-switch shouldn't be connected to the supply earth if that's TN, but it doesn't seem to be connected to the earth passing through either. Or if it's earthed via the armour, why isn't the green/yellow cable connected to the casing stud? Presumably the DB is connected to the MET below it?

1.15 a.m. you wet the bed?

 

[Lucien Nunes]

Was online anyway in a long rambling meeting with some guys on the other side of the world.

 

[davesparks]

On a separate note I am not 100% convinced by what I can see of the earthing.

I happen to know the person who's sticker is proudly displayed there and I'd say from the pictures that their standards have improved!

 

[nicebutdim]

I happen to know the person who's sticker is proudly displayed there and I'd say from the pictures that their standards have improved!

Good to see you back

 

[brianmoooore]

You seem to have a 32A socket protected by 20A fuses, rather than the expected 32A.

The box above the 32A socket has "temp supply" written on it. If "temp" is short for "temporary" (which has a habit of often becoming permanent), then there might be good reasons why the fuses are 20A.
This needs looking at by an experienced sparky.

 

[Asmdeus]

And the machine load spec is????

Unfortunately, the spot welder came without a manual. I have messaged manufacturer and waiting for a reply. The only bit I have is rating on spot welder

You seem to have a 32A socket protected by 20A fuses, rather than the expected 32A. Where does the supply come from and what do you know about its characteristics? That might be the limiting factor as to how much you can increase the fuse rating. What fuse does the welder manufacturer recommend? Aside from the current rating, are they supposed to be slower than the gG fuses fitted now?

I think the socket is 64A. I'm waiting for the spot welder manufacturer to reply. The machine is quite old, will see what fuse they recommend once I get my hands on manual

On a separate note I am not 100% convinced by what I can see of the earthing. It might be local TT in which case the body of the fuse-switch shouldn't be connected to the supply earth if that's TN, but it doesn't seem to be connected to the earth passing through either. Or if it's earthed via the armour, why isn't the green/yellow cable connected to the casing stud? Presumably the DB is connected to the MET below it?

There is earthing pole just outside the workshop. See pictures of supply attached.

The box above the 32A socket has "temp supply" written on it. If "temp" is short for "temporary" (which has a habit of often becoming permanent), then there might be good reasons why the fuses are 20A.
This needs looking at by an experienced sparky.

Someone will be coming round to have a look.

 

[davesparks]

The box above the 32A socket has "temp supply" written on it. If "temp" is short for "temporary" (which has a habit of often becoming permanent), then there might be good reasons why the fuses are 20A.
This needs looking at by an experienced sparky.

It does indeed stand for temporary in this case.


I've even seen that socket before and still can't work out whether it is PNL or PWL written on it.