Is a 10A 240v fuse useable in place of a 10A 12v ???

[johnnythespider]

Ok seems like a simple question but bought 10A glass fuses from Maplin.
Shop server gave me a bag and away I went. Got home about to put it in and I noticed
it read 10A 240v rated on the side. So can you use it or not. It looks thicker but isn't 10A 10A where ever it is found?
thoughts welcomed.

[marshman]

Ok seems like a simple question but bought 10A glass fuses from Maplin.
Shop server gave me a bag and away I went. Got home about to put it in and I noticed
it read 10A 240v rated on the side. So can you use it or not. It looks thicker but isn't 10A 10A where ever it is found?
thoughts welcomed.

Depends!! Where are you going to use it? If it is in your Stag and you are replacing an original 10 A fuse then not really. The reason is the original Lucas fuses were marked with the current they will "blow" at. So a Lucas 10A fuse will blow at 10A and be designed to carry 5A continuously. The fuses you have bought will be OK at 12V BUT they are rated to carry 10A without blowing, i.e. twice as much as the original. So if you are replacing a 10A fuse in your Stag with one from Maplins you should really use a 5A fuse. At low voltages the voltage rating of the fuse is not relevant.


Hope that helps

Roger

[kev100]

I think a car fuse blows at the rated value, whereas a mains fuse can pass the rated current continuously .. so that may be a concern .. somebody else may be able to add to that ..

[StagJonno]

I think a car fuse blows at the rated value, whereas a mains fuse can pass the rated current continuously .. so that may be a concern .. somebody else may be able to add to that ..

If it's marked BS88, then it'll blow with a sustained load >1.45 rating. Otherwise, from memory I'd expect it to blow at sustained loading above ~>1.6 rating. The speed of blowing will be shorter with the magnitude of the overload (ie a short circuit will result in very fast operation).

Sustained overloading of wires will result in them overheating and the insulation melting and making a mess of the wiring loom. The fusing on the Stag may have been quite advanced for its time, but it is still crude by modern standards.

Jonno

[Stagdad]

If it's marked BS88, then it'll blow with a sustained load >1.45 rating. Otherwise, from memory I'd expect it to blow at sustained loading above ~>1.6 rating. The speed of blowing will be shorter with the magnitude of the overload (ie a short circuit will result in very fast operation).

Sustained overloading of wires will result in them overheating and the insulation melting and making a mess of the wiring loom. The fusing on the Stag may have been quite advanced for its time, but it is still crude by modern standards.

Jonno

still better than a vauxhall zafira though

[DJT]

still better than a vauxhall zafira though

That is a totally different issue, Steve. Virtually every Zafira 'incident' has occurred when the designed heater resistor has blown and, rather than replace it with the correct item, someone has bodged it so that it won't blow next time. You should see some of the horrendous bodies that Vauxhall are dealing with. Our local dealer has had old, knackered cars in with bald tyres, but owners demanding that their bodged heater resistor is replaced with a new item. Vauxhall have bent over backwards to sort this problem. Way beyond what they are required to do under consumer law.

[milothedog]

This helps explain fuse's

HjqfZZh.jpg

[GDPR]

I'm a little confused with the 16amp one - what if it was the Low fat Cheese? would it blow sooner, later or what if was Dairylea?

[milothedog]

I'm a little confused with the 16amp one - what if it was the Low fat Cheese? would it blow sooner, later or what if was Dairylea?

Your quite right the information is misleading, It's a "Laughing Cow" triangle so should be listed as an audible warning type as well

[Paul Roberts]

......, audible warning type as well

Should this not read "edible warning type....,"