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Old 05 October 2004, 08:37   #1
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What rating fuse should I use? :) (PIC)



Bearing in mind that I'll be using 8Guage wiring from the battery direct to the outboard, - Many thanks
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Old 05 October 2004, 09:53   #2
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also using a brand new 85amp Marine Leisure Battery
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Old 05 October 2004, 10:22   #3
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Just had a look at my mariner 30 and there doesn't seem to be any fuse in that line. The engine cables are moulded onto the battery connectors and the engine connectors on the other end...

SG
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Old 05 October 2004, 10:24   #4
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Oh right, not sure is that a good thing? - or does your outboard have an earthing strap under the hood that'll blow if needed - bit like a car setup?
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Old 05 October 2004, 10:38   #5
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Quote:
Originally Posted by ollyit
earthing strap under the hood that'll blow if needed - bit like a car setup?
Que? Blowing earthing straps? I must be getting out of touch with car electrics... don't they use common/chassis grounding/return any more? Doesn't the earth strap between the engine and the chassis/ body carry the full cranking current? Have I slept/drunk through this change?
Am I the only one who uses dual pole isolation switches?
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Old 05 October 2004, 10:39   #6
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Agree it not the best electrical practice!

Just checked the workshop manual and only fuse isbetween the starter solenoid and the rectifier.

My car has a fuse in the starter circuit - think its around 60 A. So I guess you would need to find out the maximum current it will draw or charge at and use a fuse with a slightly higher rating.

SG
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Old 05 October 2004, 11:33   #7
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Ollyit

Are you trying to fuse the main feed to the starter? If so, forget it.
If I have missed the point, what are you trying to protect?
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Old 05 October 2004, 11:55   #8
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Just my lack of knowledge getting in the way then, sorry just being over cautious - I'll feed the power straight to it then - just wasnt sure what circuit protection my 2 stroke yamaha 60 has
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Old 05 October 2004, 11:59   #9
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No probs. A fuse there will only protect the wire as far as the starter solenoid.

See you and pics on the 11th.
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Old 05 October 2004, 12:04   #10
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Ollyit,
With respect, if you have little knowledge of electrical circuits, it may be an idea to get someone more knowledgeable to "show you the ropes". It isn't rocket science but you do need to have a healthy respect for it. Sorry to sound patronising, but it is one of, if not the biggest cause of fires...
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