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Posted By: Joe Henry 18A. breaker = 30A Fuse??? - 01/30/03 05:17 AM
Can someone please explain this to me? I have a device (electric fishing downrigger) in which the manufacturer has stated the following..."a 30A fuse or an 18A circuit breaker must be installed as close to the battery as possible" Ok, I do not understand this. There are 12AMPS of difference here, so how can they both protect equally? Thanks, Joe.
Posted By: Redsy Re: 18A. breaker = 30A Fuse??? - 01/30/03 12:25 PM
The (non time delay) fuse is oversized to permit inrush (starting) current to flow without blowing it. A thermal circuit breaker has an inherent ability to overcome inrush.
BTW,
It must be a special CB if it is available at 18 amps.
Posted By: HotLine1 Re: 18A. breaker = 30A Fuse??? - 01/31/03 03:03 AM
"As close to the BATTERY..."
Gee, is this a "marine" application??
Are ya running it off 12 volt?? 24 volt??
or 120 fropm a genset??
By your wording, it sounds like 12/24 volt DC.
John
Posted By: Joe Henry Re: 18A. breaker = 30A Fuse??? - 01/31/03 04:20 AM
Thanks for the responses guys, I appreciate it. Oh, its a 12Volt battery and it is a marine application, thanks.
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