Callum
Member
Registered: 17th Dec 08
Location: Renfrewshire
User status: Offline
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This is quite important to me and should be in the help zone, but I need to know this, the fuse for my water pump/windscreen pump blew, i put a new fuse in last night and it blew again, and then another one which blew, these were 15 fuse, so I then put a random fuse in and its working now, I told my dad today and he said this couldlead to a fire as it is a bigger fuse, any help is appreciated,thanks
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daymoon
Premium Member
Registered: 1st Aug 08
Location: Selby, North Yorkshire
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he is right... as in all elctrical systems fuse is designed to blow first as its cheap and easy to replace...
by putting bigger fuse, its not weakest point in circuit anymore....
so if current is bigger than it should be ( thats why your fuses blow) wiring can overheat, melting inulation and shorting on something.....
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Callum
Member
Registered: 17th Dec 08
Location: Renfrewshire
User status: Offline
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The correct fuse was in and it blew twice, any reason why that would happen?
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Tomnova16
Premium Member
Registered: 21st Jan 06
Location: Gerrards Cross Drives: Porsche 911
User status: Offline
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there is a fault which is causing the fuse to blow, this is what a fuse is for, to stop other parts being damaged. you will have to work out why its blowing, wire shorting out somewhere, loose connection, motor blown
http://www.lemass.co.uk/ for all your automotive/bodyshop needs
Located in Chalfont st Peter
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ShEp
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Registered: 9th Aug 05
Location: Dingwall, Highland
User status: Offline
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I had a fault like this with a stereo in a mk3 astra.
Kept blowing fuses, even larger ones would blow.
I replaced the fuse with a length of wire and waited for the smoke,
Smoke came piling out from behind the dash board, seems the sereo had been wired in wrong.
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Callum
Member
Registered: 17th Dec 08
Location: Renfrewshire
User status: Offline
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The Cd player in my car seems a bit dodgy, The mirrors might have been wired differently too, but im not sure, will a fire occur even though the fuse isn't blowing?
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Tomnova16
Premium Member
Registered: 21st Jan 06
Location: Gerrards Cross Drives: Porsche 911
User status: Offline
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if the fuse isnt blowing then maybe yes, the fuse is suppose to blow to stop it happening
http://www.lemass.co.uk/ for all your automotive/bodyshop needs
Located in Chalfont st Peter
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Eddx14xe
Member
Registered: 12th Jan 10
Location: Hertfordshire
User status: Offline
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The way a fuse works is the metal/wire inside it melts, when too much current passes through it.
So if you put a higher amp fuse in there, the fuse wont blow, it will be the cable that melts first, causing fire/short circuits etc etc
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Callum
Member
Registered: 17th Dec 08
Location: Renfrewshire
User status: Offline
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Could anyone reccomend how to find out why the fuse is blowing? Thanks
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Root
Member
Registered: 28th Dec 08
User status: Offline
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a bigger fuse will mean it's letting more electricity pass through it (without destroying the wire...cus that's all a fuse is essentially).
so if you overload your system by accident, have a short-circuit, owt like that, you risk damaging equipment by not having the proper fuse.
the fuse is popping because you were using the wrong fuse in the first place OR to do with dodgy wires/connections, earth's where there shouldn't be etc. Check your wires
[Edited on 16-03-2010 by Root]
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