battery cut off relay

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battery cut off relay

Post by rebel alliance » Sun Mar 03, 2019 1:21 pm

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would this be suitable to put inline on the battery earth cable



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battery cut off relay

Post by AJL Electronics » Sun Mar 03, 2019 1:36 pm

It probably would but why?


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battery cut off relay

Post by rebel alliance » Sun Mar 03, 2019 1:42 pm

Cheers...i reasoned that with a loom fire/short, by the time i stopped opened the bonnet and used a manual cut off it may be too late..With this its just flick a switch on the dash , couple of seconds at most



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Post by scimmy_man » Sun Mar 03, 2019 2:26 pm

how much power would the starter draw?
probably more than 200 amp on a cold day.
would it weld the contacts closed?


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battery cut off relay

Post by rebel alliance » Sun Mar 03, 2019 2:49 pm

Reckon your right , found some 500 amp relays on ebay instead



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battery cut off relay

Post by scimmy_man » Sun Mar 03, 2019 4:39 pm

safer


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battery cut off relay

Post by AJL Electronics » Sun Mar 03, 2019 4:40 pm

With the contacts held closed, it isn't such an issue, the thing that kills solenoids is switching high currents. I think it overkill though, you would be better improving the fusing arrangements in my opinion. That will also keep the important feeds like the clock and radio memories.


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Post by rebel alliance » Sun Mar 03, 2019 5:31 pm

Cheers the old loom scares me i just want a quick cut off just in case..Sorry Terry i can't get pm's to reply but the ebay starter / cut offs are around £12



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battery cut off relay

Post by peter freeman » Sun Mar 03, 2019 5:37 pm

You will still have some power around when the switch is off otherwise you will not be able to energise the relay - all be it wired just to the battery



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battery cut off relay

Post by rebel alliance » Sun Mar 03, 2019 5:45 pm

Thanks peter but it will only be one new wire from the battery through a switch to the relay operating coil everything else will be dead until i energise it



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battery cut off relay

Post by rebel alliance » Sun Mar 03, 2019 5:48 pm

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Think how long it would take if you were in the outside lane of a motorway to get on the hard shoulder get out open bonnet and use a normal battery cut off....car be full of lucas smoke by then 😊



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battery cut off relay

Post by AJL Electronics » Sun Mar 03, 2019 6:09 pm

rebel alliance wrote:
Sun Mar 03, 2019 5:48 pm
Think how long it would take if you were in the outside lane of a motorway to get on the hard shoulder get out open bonnet and use a normal battery cut off....car be full of lucas smoke by then 😊
Think how much easier it would be if the loom was saved by the simple addition of a few fuses. ;-)


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battery cut off relay

Post by rebel alliance » Sun Mar 03, 2019 6:11 pm

Your probably right but i would not know where to start 😊



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Post by willholderogri » Sun Mar 03, 2019 6:12 pm

Its a good idea but it needs to be in the live feed


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Post by rebel alliance » Sun Mar 03, 2019 6:19 pm

Think the negative is easier ,stick the relay out the way ..i would not think it made any difference as long as the main battery power was cut ?



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