inverter welder

[nails]

I have a small inverter welder. When i use it it trips the electric in my daughters house. Her electric comes through the same line on the pole as ours but has a separate supply off the pole to her own meter. Why does it trip her main fuse and not mine?

 

[Pistonbroke]

Is it blowing an individual trip or the whole lot

 

[Cornish Rattler]

A mate of my son came last weekend to weld on some new Dumb irons on a land rover we are working on he came with a new Snap on one and it didn't trip the fuses like our old stick welder did so son is looking at getting something similar.

 

[Nearly]

Her trips in the consumer unit could be more sensitive.

Hint - the plug socket next to the cooker (in older kitchens) will be higher rated than just one on a ring main.

 

[Mur Huwcun]

What do you mean as main fuse? Is it a breaker for socket ring main or the actual RCD? If it’s throwing the RCD then there’s a fault with the welder. Maybe that house was wired more recently and has RCDs or RCBOs or more sensitiv items. Are they 30 or 100mA?

 

[TheTallGuy]

I have a small inverter welder. When i use it it trips the electric in my daughters house. Her electric comes through the same line on the pole as ours but has a separate supply off the pole to her own meter. Why does it trip her main fuse and not mine?

Is it tripping her supply when you use it off your supply?

 

[nails]

Is it blowing an individual trip or the whole lot

It blows her RCCB , not individual trip switches

 

[nails]

Is it tripping her supply when you use it off your supply?

Yes , that is what i dont understand.

 

[TheTallGuy]

Yes , that is what i dont understand.

I would be speaking to your DNO as it sounds like there is a problem with the supply to your houses.

 

[nails]

What do you mean as main fuse? Is it a breaker for socket ring main or the actual RCD? If it’s throwing the RCD then there’s a fault with the welder. Maybe that house was wired more recently and has RCDs or RCBOs or more sensitiv items. Are they 30 or 100mA?

It is an RCCB , yes it was wired only a few years ago

 

[Deereone]

This new fangled electric wizardry is notoriously fickle. We have a 30 mA breaker in the dairy but when the emersion element goes the 100mA breaker goes further down the line.

 

[335d]

Do you have an rccb in your own house. Could be a high resistance between neutral and earth in your daughters house. The surge and consequent voltage drop when you strike the welder, could cause the voltage in the neutral line to rise slightly, tripping the rccb.

 

[TheTallGuy]

This new fangled electric wizardry is notoriously fickle. We have a 30 mA breaker in the dairy but when the emersion element goes the 100mA breaker goes further down the line.

I would suggest that the 30A RCD needs testing

 

[335d]

It is an RCCB , yes it was wired only a few years ago

You sure that was wired a few years ago? Looks like components from a few decades ago

 

[TheTallGuy]

You sure that was wired a few years ago? Looks like components from a few decades ago

Nope, that RCD is a Lewden (also sold as CGD) - I think that style has been around for around 15 years, but judging by the lack of browning either from age or smoke letting I'd guess a bit younger than that....

 

[nails]

Nope, that RCD is a Lewden (also sold as CGD) - I think that style has been around for around 15 years, but judging by the lack of browning either from age or smoke letting I'd guess a bit younger than that....

Yes it was fitted 7 years ago . I am going to get the sparky who fitted it to have a look when he is passing.