[PSUBS-MAILIST] Battery boxes

[hank pronk via Personal_Submersibles]

 Steve,I am told it may  fail, but I am not convinced.  I expect the contacts to carbon up but I am using big robust relays and I will drill them out.  They are pretty cheap to replace annually.The reason for putting them in the battery box is reduced cable length.  I have to have the weight of the batteries at the very back end of the sub for balance.  That means the cables would be 6 feet to the penetrator then to the relays then back out to the motors.  I would be running 50 amps 12 feet.  I have a fairly small battery bank and don't want to waste power on long cable leads.I made the battery box today and it turned out great!Hank
    On Monday, December 10, 2018, 3:36:55 PM MST, Stephen Fordyce via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Hi Hank,I'm curious about how the relays will go (perhaps it's been done?) in an ambient environment.  Ie if they are sealed they might implode.
Also what the oil might do with the arc caused by contacts making/breaking.

Cheers,Steve

On Tue, Dec 11, 2018 at 12:14 AM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 James, i decided to make a fibreglass box today by cutting up an old canopy.    i am killing two birds with one stone, because I have to get rid of it anyways.  I like it being Fibreglass anyways for safety reasons.  I am making it longer to accommodate relays also.Hankps; how is your new build coming
    On Monday, December 10, 2018, 4:16:22 AM MST, James Frankland via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  
 
 Old ammunition boxes are good for all sorts of things.  Watertight as
well.  I've got loads in all sorts of sizes.

https://www.ebay.co.uk/bhp/ammo-box
On Sun, 9 Dec 2018 at 17:13, hank pronk via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
>
> Hi all,
> I am in search of some oil filled battery box's .  I just need the boxes not the batteries.
> Any leads?
> Hank
>
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