In line circuit breaker
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In line circuit breaker
Good afternoon all
After a scary moment with putting a screw into a heavy powered wire. I am going to fit a failsafe on the battery power lead.
My battery is in the boot, so I have a long big power lead from front to back.
Am thinking of fitting something like this pictured, unless someone has a better alternative? My question is, what kind of amps will the starter pull? , I want to make sure the car is protected, but not trip out all the time on starting up
Thanks
https://voltaconsolar.com/breaker-inlin ... -150a.html
https://www.ebay.co.uk/itm/256009780497
After a scary moment with putting a screw into a heavy powered wire. I am going to fit a failsafe on the battery power lead.
My battery is in the boot, so I have a long big power lead from front to back.
Am thinking of fitting something like this pictured, unless someone has a better alternative? My question is, what kind of amps will the starter pull? , I want to make sure the car is protected, but not trip out all the time on starting up
Thanks
https://voltaconsolar.com/breaker-inlin ... -150a.html
https://www.ebay.co.uk/itm/256009780497
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Re: In line circuit breaker
I have 2 installed in the Race Challenger and they saved my bacon at the track (at the cost of a Q2 run) when an alternator went short circuit and the wiring loom nearly went up in smoke. Just diagnose and reset. Simples.
I heartily recommend them or similar....
I heartily recommend them or similar....
Pete Wiseman; Cambridge.
Mopar by the grace of God
Mopar by the grace of God
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Re: In line circuit breaker
I thought starters were in the 100-150 amp range, but nothing to back that up.
No doubt Dave999 will be along soon to give accurate data
No doubt Dave999 will be along soon to give accurate data
"I spent a lot of money on booze, birds and fast cars. The rest I just squandered."
Re: In line circuit breaker
I think you got it about right, its in the 100s
Me accurate haha probably not
ballpark well yeah maybe
starter can pull the full cold cranking amps of the battery for a split second, which is a lot.
When it switches on, apart from the small current used by the solenoid the starter acts as nearly a dead short, until it turns, so the current is HUGE.
CCA for car battery:- Must manage somewhere between 250 to 600 amps at 0*C for 30 seconds depending on battery size
a spinning starter draws anything from 90 like a swift or yaris to 200 amps on a v8, a petrol car engine of "sensible" Compression.
i'd be putting the breakers in the battery- to- car circuit and the alternator - to - car circuit. Protect bunches of cables in the loom first over and above the simple big fat single wire run from battery to starter. Its easy to replace and is in most cases on the other side of the bodywork from you... if it burns, its outside...! or if it isn't move it outside on rubber lined clips.
the main loom is inside, its complicated and is a PITA to replace.
1 hot wire ruins the insulation on all others and turns the loom into a stick of rock with a copper core.
breakers to protect this makes some sense although all of it apart from potentially the igntion feed is probably protected by the fuse box
so your breakers are protecting the moderately fat alternater wire and the moderately fat main feed from battery into car...they pass through the firewall. risk of physical damage. makes some sense to add in protection.
Dave
Me accurate haha probably not
ballpark well yeah maybe
starter can pull the full cold cranking amps of the battery for a split second, which is a lot.
When it switches on, apart from the small current used by the solenoid the starter acts as nearly a dead short, until it turns, so the current is HUGE.
CCA for car battery:- Must manage somewhere between 250 to 600 amps at 0*C for 30 seconds depending on battery size
a spinning starter draws anything from 90 like a swift or yaris to 200 amps on a v8, a petrol car engine of "sensible" Compression.
i'd be putting the breakers in the battery- to- car circuit and the alternator - to - car circuit. Protect bunches of cables in the loom first over and above the simple big fat single wire run from battery to starter. Its easy to replace and is in most cases on the other side of the bodywork from you... if it burns, its outside...! or if it isn't move it outside on rubber lined clips.
the main loom is inside, its complicated and is a PITA to replace.
1 hot wire ruins the insulation on all others and turns the loom into a stick of rock with a copper core.
breakers to protect this makes some sense although all of it apart from potentially the igntion feed is probably protected by the fuse box
so your breakers are protecting the moderately fat alternater wire and the moderately fat main feed from battery into car...they pass through the firewall. risk of physical damage. makes some sense to add in protection.
Dave
The Greater Knapweed near the Mugwort by the Buckthorn tree is dying
Re: In line circuit breaker
Thanks Pete' Mark' and of course Dave'
This maybe a stupid question
But I have a long front to rear big thick positive cable.I also have a short negative cable not as thick as the resistance wont be as much on the short negative cable.
Am I right in thinking, I can put the breaker on the smaller shorter negative wire, to the same effect?
This maybe a stupid question
But I have a long front to rear big thick positive cable.I also have a short negative cable not as thick as the resistance wont be as much on the short negative cable.
Am I right in thinking, I can put the breaker on the smaller shorter negative wire, to the same effect?
Re: In line circuit breaker
I think it should be on the positive side for best protection.
Re: In line circuit breaker
same effect yes, not sure about oreintation for wireing it in so it activates... depends on type i think, and much harder to get correct size because the earth strap carries everything...
Dave
Dave
The Greater Knapweed near the Mugwort by the Buckthorn tree is dying
Re: In line circuit breaker
Thanks guys
Re: In line circuit breaker
Ooh. I like this idea.
"Cum homine de cane debeo congredi." Woof.
Current Charger status - "Working !"
Current Charger status - "Working !"
Re: In line circuit breaker
He has the hands of a lady..!
The Greater Knapweed near the Mugwort by the Buckthorn tree is dying