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Author: Subject: How do these work on a 13A plug?
scudderfish
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posted on 19/8/26 at 07:58 PM Reply With Quote
How do these work on a 13A plug?

https://www.amazon.co.uk/SPRIGHOLLY-200A-240V-Welder-Flux-Cored/dp/B0GVDY2GLX?s=diy&ufe=app_do%3Aamzn1.fos.d7e5a2de-8759-4da3-993c-d11b6e3d217f />
200A at 20v is 4000w which should blow a 13A fuse as far as I can see.




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cliftyhanger
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posted on 19/8/26 at 08:32 PM Reply With Quote
quote:
Originally posted by scudderfish
https://www.amazon.co.uk/SPRIGHOLLY-200A-240V-Welder-Flux-Cored/dp/B0GVDY2GLX?s=diy&ufe=app_do%3Aamzn1.fos.d7e5a2de-8759-4da3-993c-d11b6e3d217f />
200A at 20v is 4000w which should blow a 13A fuse as far as I can see.


I would take their figures with a very large pinch of salt!
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nick205
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posted on 20/8/26 at 09:10 AM Reply With Quote
I would as well.

Probably meant to work from a 16A supply (or more).

You may find it'll work OK at lower power settings from a 13A supply, but go too far and you'll blow fuses or trip switches.
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westf27
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posted on 20/8/26 at 10:31 AM Reply With Quote
Look in the box,it comes with a nail for the plugtop on high settings.




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SteveWalker
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posted on 20/8/26 at 12:32 PM Reply With Quote
Fuses don't blow at their rated current. There are charts for this. There is a lower and an upper curve, of time to blow vs current and the fuses are guaranteed to blow within the times stated at a particular current, somewhere between those two curves.

At, say, 10x overcurrent, it may be likely to blow in 0.4 seconds for instance, but it may do so with as little as 6x or as much as 12x (made up figures).

Even on the lower curve, a 13A BS1362 fuse will carry 21A for at least 2.8 hours and likely indefinitely.
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Mr Whippy
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posted on 23/8/26 at 01:44 AM Reply With Quote
The fuse may not blow but your wall socket will melt, been there.
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SteveWalker
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posted on 23/8/26 at 01:50 PM Reply With Quote
Quite possibly. However, for intermittent use, it be unlikely to be a problem. Continuous use would be.
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coyoteboy
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posted on 30/8/26 at 04:37 PM Reply With Quote
Depends what you're doing with it. IF you're running 200A continuous on some 5mm steel for 2m of weld, sure you'll see issues.

I have a Hitbox 200A mig/tig machine, runs absolutely fine over a 25m extension when welding 1mm steel because I'm not even close to the current limit.

You can generally push more than 13A through a 13A plug for a short while, but it will burn eventually even if the fuse doesn't trip. I've run an experimental hardware item on a 13A plug at 3.3kW, for the first 10 mins you'd never know, for the next 30 mins it was getting toasty. After that it was a controlled burn




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