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Tennessee Fishing Forums
Watercraft
no fusing in boat wiring runs
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<blockquote data-quote="WTM" data-source="post: 5581616" data-attributes="member: 6230"><p>ive been seeing this a lot on diy and even "pro" installs along with unlabeled conductors, no B+ or L+ terminal protection, undersized overcurrent protection to name a few. one thing to remember fuses proctect conductors, not devices, from catastrophic failures. ifin you decide you dont need a fuse within 7" or (42" if in conduit or sleeving) of the battery on that 10ga conductor and think that a fuse at the load end will protect that conductor than you have basically created a filament wire with that conductor on the unfused length, if it gets damaged and shorts to ground, ie B- short or an aluminum hull. also stay away from cheap chinese fuses and breakers. use good fuses ore breakers like bussman, little fuse, blue sea, etc.</p><p></p><p>here is some pretty good info on boat wiring and other stuff. although the ABYC standards only really includes inboards, doesnt mean that outboards are safer and shouldnt use those rules and standards.</p><p></p><p>[URL unfurl="true"]https://marinehowto.com/fusing-termination-voltage-drop/[/URL]</p><p></p><p>you might think that i have an LFP battery and the BMS takes care of that with short circuit protection. well, take a look at this video on a well known LFP brand. scroll to almost the end if you dont want to watch the whole video. spoiler, the short circuit test failed miserably.</p><p></p><p>[MEDIA=youtube]1WF9NlDW_r4[/MEDIA]</p></blockquote><p></p>
[QUOTE="WTM, post: 5581616, member: 6230"] ive been seeing this a lot on diy and even "pro" installs along with unlabeled conductors, no B+ or L+ terminal protection, undersized overcurrent protection to name a few. one thing to remember fuses proctect conductors, not devices, from catastrophic failures. ifin you decide you dont need a fuse within 7" or (42" if in conduit or sleeving) of the battery on that 10ga conductor and think that a fuse at the load end will protect that conductor than you have basically created a filament wire with that conductor on the unfused length, if it gets damaged and shorts to ground, ie B- short or an aluminum hull. also stay away from cheap chinese fuses and breakers. use good fuses ore breakers like bussman, little fuse, blue sea, etc. here is some pretty good info on boat wiring and other stuff. although the ABYC standards only really includes inboards, doesnt mean that outboards are safer and shouldnt use those rules and standards. [URL unfurl="true"]https://marinehowto.com/fusing-termination-voltage-drop/[/URL] you might think that i have an LFP battery and the BMS takes care of that with short circuit protection. well, take a look at this video on a well known LFP brand. scroll to almost the end if you dont want to watch the whole video. spoiler, the short circuit test failed miserably. [MEDIA=youtube]1WF9NlDW_r4[/MEDIA] [/QUOTE]
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Tennessee Fishing Forums
Watercraft
no fusing in boat wiring runs
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