Fuses: slow blow? quick blow?

[mattinhertford]

Hi all,

Just about to buy a few 10amp fuses as spares (ebay is best I assume?) and they're all listed as either 'slow blow' or 'quick blow'.

Which do I want??
(1098 '67 saloon....although I doubt that makes a difference

Thanks

Matt

[bmcecosse]

The standard fuses in the fuse block are 35 amp .. and I would go for quick blow, The fuse in the single holder (side lights) is probably 10 amp and again I would get quick blow.

[alexmcguffie]

Interesting one...

Slow blow fuses are generally intended for use with motors or anything inductive as they have a high inrush current which is greater than the steady state current once running. So wiper motor, horn, fuel pump etc. If these were fused individually I'd go for a slow or standard fuse. Unfortunately on Minors they aren't and 35A fuses are overkill really So I would go with fast for them. I'd guess the 10A you need if for the interior lights so fast is the way to go there too.

http://www.vehicle-wiring-products.eu/p ... -fuse-30mm

Interestingly, VWP rate their 10A fuses at 5A continuous and 10A blow so I suspect these are Fast fuses.

In an ideal world, I would be tempted to replace the 2x fuse holder with a 4x holder.

[mike.perry]

35 amp blow are marked as 17 amp continuous

[alexmcguffie]

Yep. It's a standard way of rating fuses. VWP is a bit missleading though. If a fuse is marked as 10A(F) or 10A(S) there will be a rating of how long it will pass 200% of its rated current for before blowing.

[mattinhertford]

Super, thanks guys.