PSU plug amp?

skipper847 · 2025-12-16T15:06:46+0000

Hi. I know i have a antec HGC 1000watt PSU im pretty sure its platinum one. I was just wondering What amp fuse is best for it. I recebtly moved and got the plugs mixed up and cant remember if m using right plug. Or is any ok?. Thanks.

Philtor · 2025-12-16T15:30:36+0000

Have a look in here..

What fuse does your psu cable use?

When I checked the kettle cables from my 2 pcs I had a 13A fuse in one and 5A fuse in the other. What should be the correct fuse to use? What fuse does your psu cable use? Thanks

forums.overclockers.co.uk

skipper847 · 2025-12-16T15:33:58+0000

Philtor said:
Have a look in here..

What fuse does your psu cable use?

When I checked the kettle cables from my 2 pcs I had a 13A fuse in one and 5A fuse in the other. What should be the correct fuse to use? What fuse does your psu cable use? Thanks

forums.overclockers.co.uk

Its got mixed results just like google search. have got a 13A in at the moment. The only thing that seems to happen if the PSU fails is the bang?. I was just wondering if this had a inpact on performance though?.

aaronyuri · 2025-12-16T15:34:40+0000

230V x 5A = 1150W. Plenty for a 1kW PSU.

A 13A fuse would blow at 2990W...

therealdippy · 2025-12-16T15:38:15+0000

Whilst that PSU will draw up to around 4A (UK voltage is mostly around 245Vac), the purpose of the fuse in the plug is to protect the cable (including both plugs) in the event of a fault condition. UK plugs are rated at 13A, however the IEC plug for the PSU may be 16A (C19/20) or 10A (C13/14). For safety I would recommend a 5A fuse.

Tetras · 2025-12-16T19:28:59+0000

skipper847 said:
I was just wondering if this had a inpact on performance though?.

I wouldn't use a cable/plug with a small fuse (even if technically sufficient), just because it might not have been intended for a high draw device. Fitting a smaller fuse for safety isn't a problem, except keep in mind PSUs can draw higher than their rating.

tamzzy · 2025-12-17T16:31:11+0000

aaronyuri said:
230V x 5A = 1150W. Plenty for a 1kW PSU.

A 13A fuse would blow at 2990W...

therealdippy said:
Whilst that PSU will draw up to around 4A (UK voltage is mostly around 245Vac), the purpose of the fuse in the plug is to protect the cable (including both plugs) in the event of a fault condition. UK plugs are rated at 13A, however the IEC plug for the PSU may be 16A (C19/20) or 10A (C13/14). For safety I would recommend a 5A fuse.

this. 5A fuse for a "normal" PSU under 1kW is the most sensible

also don't forget that the output power is not the same as the input power as the PSU is not 100% efficient
if you're using a psu that's 1kw or more then realistically i'd opt for a 7A/8A fuse

Admetos · 2025-12-17T20:14:49+0000

If you do decide to change the fuse, a 5A should be fine — or as Tammy suggested, around 7–8A. Personally, I wouldn’t worry too much; if your house has modern RCD protection, it should trip if there’s a fault anyway.

One thing to watch: avoid the really cheap multi-pack fuses. There have been batches (often imports) that didn’t have the sand filling inside them. If you’re unsure, the only real way to check is to sacrifice one fuse and break it open to see what’s inside.