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Technical
Fuses on split charge leisure battery setup
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<blockquote data-quote="slow-lane-Matt" data-source="post: 627515" data-attributes="member: 19329"><p>My old setup worked fine, with an original regulator off the dynamo, and a direct connection between motor battery and leisure battery controlled by a relay off the regulator.</p><p></p><p>I had to replace the mechanical orginal regulator with a new solid state one.</p><p></p><p>The new one is not able to delivery enough current to switch the relay, leaving the ignition light on dimly red permanently.</p><p></p><p>So I have bought one of these auto-sensing relays, if it senses 13.3v it connects and joins the batterys, anything less it isolates the L battery.</p><p></p><p>It says you must fuse on both sides, near the battery, which makes perfect sense, if there's no fuse and you have a fault, the wire will burn out and </p><p>start a fire in engine compartment.</p><p></p><p>...but they don't say what value of fuse is needed..</p><p></p><p>Anyone got any experience on this - the relay is rated at 160A peak, I guess the relay should be a lot lower - but how much ...</p><p></p><p>Any help greatly appreciated</p></blockquote><p></p>
[QUOTE="slow-lane-Matt, post: 627515, member: 19329"] My old setup worked fine, with an original regulator off the dynamo, and a direct connection between motor battery and leisure battery controlled by a relay off the regulator. I had to replace the mechanical orginal regulator with a new solid state one. The new one is not able to delivery enough current to switch the relay, leaving the ignition light on dimly red permanently. So I have bought one of these auto-sensing relays, if it senses 13.3v it connects and joins the batterys, anything less it isolates the L battery. It says you must fuse on both sides, near the battery, which makes perfect sense, if there's no fuse and you have a fault, the wire will burn out and start a fire in engine compartment. ...but they don't say what value of fuse is needed.. Anyone got any experience on this - the relay is rated at 160A peak, I guess the relay should be a lot lower - but how much ... Any help greatly appreciated [/QUOTE]
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Fuses on split charge leisure battery setup
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