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[grifter]

Hi

I've just recently acquired a spot welder 230v rating but need to plug into a fused isolator. My garage has a standard cable from mains consumer unit in house, with a small fuse box in the garage, with 2 fuses. Can an isolator be wired on to the existing supply to the garage or will it need to come from the house CU?

Thanks

G

[dave the builder]

Far to vague information wise to give advice
depends on many factors 
start with your incoming supply ...

TN-S,
TN-C-S, (PME)
TT,
TN-C
if you don't know ,It may be wise to get a qualified spark to look and do the work if required

[grifter]

That's the plan, I spoke to some guys on the welding forum and they've said shouldn't be too big a job, but am going to get sparky to install it, so he should have a good idea what I need.

[Viral_Jim]

It's hard with jobs like that.

I've asked on a few forums and the standard answer is 'if you have to ask, get a pro to do it' which is fine, except I want to know enough about what needs doing to know if I'm being taken for a ride 

[tidla]

Any idea what sort of ampage it draws when in use?

[Marks DTM Calib]

What are the specs of the welder is the first and key question (they usually quote the supply requirements in the manual)

[ballcock50]

As above you need to know the power consumption, a thirteen amp fused plug is also an isolator but if it requires more than that you will need either a sixteen amp plug and socket or possibly higher running on a dedicated correctly rated fused supply. but you must ensure the incoming garage supply is capable of carrying sufficient capacity for the welder and any other device running at the same time.