Re: [Electric Boats] grounding

 

Although I have over 20 years in alternative home and custom vehicle wiring, I just bought and received a couple of excelent books I got off Amazon.  "Boatowner's Illustrated Electrical handbook", (Charlie Wing), and "Boatowner's Mechanical & Electrical Manual, third edition" (Nigel Calder).   Each was about the cost of a "Chilton's" ($26.00-$30.00).  They seem to cover in quite good detail most of the problems and concerns questioned here, including this one.

 

The short answer, you should make sure the engine mount, engine, shaft, and prop are all grounded together and to the boat.  If you do not, among other things, you can develop static, electrocution potentials, etc. I recommend flex straps like those used (seemingly without end) on all MoPar products. Webbed grounding straps are also offered at O'Reilly's, and in rolls on eBay.

Cheers mates,

...

 

From: fumelesssailor@yahoo.com [electricboats]

Sent: Thursday, October 20, 2016 9:13 PM

To: electricboats@yahoogroups.com

Subject: Re: [Electric Boats] grounding

 

 

Anybody have experience with whether tying your battery ground to the prop shaft/motor mount affects anything?

Westerly Renown 32'
10KW Motenergy ME1115
48V Sevcon Gen-4 450Amp
2:1 belt drive, 3 blade 14x11 prop
4x4D 200AHr AGM Mkbattery
5x100w panels, Victron BlueSolar 150/35 MPPT
Noco Genius4 AC charger

--------------------------------------------
On Thu, 10/13/16, fumelesssailor@yahoo.com [electricboats] <electricboats@yahoogroups.com> wrote:

Subject: [Electric Boats] grounding
To: electricboats@yahoogroups.com
Date: Thursday, October 13, 2016, 9:27 PM
So I have three things that I could tie together:
the prop, the ground of the 48V system and the ground of the
12V system.

Instinct tells me I should tie all the grounds together.

But why?

Are there any disadvantages to leaving them floating?











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