Fuel tank grounding

Dan,
the ground goes to the engine block. You should have a common ground back there anyway for the fuel fill ans aft nav light.

The metallic deck fill fitting will also require grounding. Its OK to daisy chain it.

Right or wrong, none of the cc's I've taken apart have had grounds run to the tank or filler.

The sender ground should not be used nor construed as a tank ground. They are two different animals. A close look at late model senders will reveal that they are designed to be electrically isolated via plastic washers on the screws.

I typically don't get worked up over ski boats and the ABYC standards, just the CFRs, of which this is one. Hard fuel pressure lines is the other. Most of these boats dont have battery disconnect switches or fuses on the float switch. I dont really care.

Shall we have a discussion on friction discharge,(static is a wrong word and i dont want the Professor getting angry.) portable gas cans, trailers and boat lifts? I have spent three occasions in the burn ward interviewing boat owners. Please ground the fills.

To take it a step further, My center console has a jumper from the deck fill to the breast cleat. I always touch the can or gas station dispenser to the cleat first to balance the two before removing the fill cap. This jumper went on after one of visits to the burn ward.


The Nautique didn't have anywhere handy to do the same.

Tim,
I understood what CC didn't do. They should have bonded the fill to the breast cleat.

My '85 and '95 both had grounds on the filler and tanks. Don't know if it was stock or not but they were there when I took them apart.

When we talk about ground to the block, and ultimately to the negative terminal of the battery...

is that the same thing as

Ground used for discharge of static energy?