Grounding plastic fuel tank???

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

Guest
I purchased two Moeller 24 gal. side tanks for my project; they come set up one for port and one for stbd. What confuses me is that one fill is plastic molded with the tank and the other has a metal fill tube with a warning message that it must be grounded. I'm a tad confused on this one.

From ABYC E-11:

24.16 FUEL SYSTEM GROUNDING

24.16.1 Each metallic fuel tank and metal or metallic plated component of the fuel fill system, which is in contact with the fuel, shall be grounded so that its resistance to the boat's ground is less than one ohm.

NOTES: 1. The body of the deck fill is considered to be in contact with the fuel.2. For the grounding of liquid level transmitters see ABYC E-11, AC and DC Electrical Systems on Boats.

24.16.1.1Metallic components not in contact with fuel (e.g., retaining chain and/or cap) on non-metallic deck fill assemblies shall not be grounded.

24.16.1.2 Grounding wires shall not be clamped between the fill pipes and the flexible hose (see ABYC E-11, AC and DC Electrical Systems on Boats).

20200513_142535_resized.jpg


20200513_135858_resized.jpg
[/i]
 
20200513_142535_resized.jpg


20200513_135858_resized.jpg
[/i][/quote]

The plastic one doesn't need to be grounded.
Build a jumper between sender & filler neck & be done with it. :thup & run a gnd wire from sender to any ground buss or neg bat. terminal. :mrgreen:

Real fuel fill hose has a ground wire built in it.
 
Un wind some of the wire in the fill hose & bend it over inside, slide the fill into the hose & clamp. on the other end at the tank with the plastic fill neck bend the wire to the outside & attach your jumper to it. On the metal fill neck do like fill end, :thup
 
Heed the part that reads: Seek professional help if you our unsure of procedure!

You might reach out to a marine mechanic you trust for clarification.

Would also think the tank manufacture would have some advice.
 
I notice that both of the tanks have fuel gauges. Both tanks should have the fuel gauge grounded--both to boat's negative ground, and to the the fuel fill metal rim, with a jumper. On the case of the metal fill, I would run the jumper to the fill fill also.
 
This may have been discussed before and I just don't remember. I know that I grounded my built-in fuel tank in the CD 16, and I just found out that one of my stainless fuel tanks in my new boat isn't grounded and I'm working on fixing that. But it did make me wonder about the ground on my C Dory. Yes, it is grounded when in the water, but many of us fill up at a service station when possible. We must be dealing with an ungrounded tank there. What precautions are required?
 
We must be dealing with an ungrounded tank there. What precautions are required?

The hose from the pump is grounded. (not to the negative of the boat,) but if you complete a when putting the pump nozzle on the metal of the grounded fuel fill, you complete the ground to the boat.
 
What really has me curious is why Moeller would make these tanks differently, other than one is beveled for port and one for starboard installation. Wondering why one has a metal fill and one has a plastic fill.
 
Back
Top