1/0 through floor - grommet or bulkhead?

[wevie 10+ year member]

Upgrading my main feed to 1/0. Best route will be underneath car and then into hatch through "trunk" floor. Should I use a grommet or a bulkhead connector?

The bulkhead would be better for eliminating ANY chance of rubbing, but it would add connections, thus resistance.

Click to read more...

 

[dumple 5,000+ posts]

It it were me I would drill a hole thru the firewall

 

[1hawaii50 10+ year member]

It it were me I would drill a hole thru the firewall

I would use the firewall with a grommet. There has to be SOMEPLACE along the firewall where you can get the wire through.