Master Cutoff Switch

[FireSale]

Originally Posted by Jeff Stout

If I have battery in stock location and add a second battery in back do I need a master cut off switch?
I think I don't but asking as I need to add a battery.

General: 8.4 Mandatory when battery is relocated or as outlined in Class Requirements.


Check the current class rules for your car. My guess is yes. Battery in trunk = rear deck mount cut off.

[Jeff Stout]

Originally Posted by FireSale

General: 8.4 Mandatory when battery is relocated or as outlined in Class

Check the current class rules for your car. My guess is yes. Battery in trunk = rear deck mount cut off.

I thought that at first, but I'm not re locating. Just adding

[Duster 7695]

Jeff,
You do need a cut off switch at the back of the car since you are putting a battery in the trunk.

Raul

[FireSale]

Originally Posted by Jeff Stout

I thought that at first, but I'm not re locating. Just adding

It's just a switch.... Unless you are adding under the hood, put it in.


A stock battery location is under the hood. Install one anywhere else and a cut off would be required. When the battery is under the hood the power usually runs to a distribution block under the hood keeping the feed short and contained. When you add/relocate a battery in the trunk, you have 10-15 feet of vulnerable wire running under the car. The cutoff switch is meant to do two things, kill ignition and fuel pump power (fire control) and prevent any pinched or cut wire from shorting the chassis and blowing the whole friggin' car up with you inside.


Disclaimer: I am a bracket racer. I have a full cage, window net, neck collar and fire extinguisher in my 12 second car.



Anyone know the kill requirements for electric vehicles? Jeff Lane, you out there? I'd ask Garlits but I don't think he's around these parts much.