Earthing battery banks [RE-wrenches]

[Warren Lauzon]

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We have been having that debate among ourselves for years :P

Electrically it seems like it is 50-50, sometimes better to float.  But 
lightning protection with a floating system can be a real problem, and with 
ungrounded batteries stuff can flash around all over looking for a path to 
ground, even on nearby strikes.

So 98% of the time we opt for a negative ground

..................................................................................................
Northern Arizona Wind & Sun - Electricity From The Sun
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----- Original Message ----- 
From: "Carl Emerson, Free Power Ltd." <freepower at freepower.co.nz>
To: <RE-wrenches at topica.com>
Sent: Tuesday, October 02, 2007 5:54 PM
Subject: Earthing battery banks [RE-wrenches]


>
> Hi Group,
>
> Has someone out there done a Scirocco MWI install and did they earth the
> battery bank negative ??
>
> I understand that if the PV input is connected then earthing the battery
> will upset the GFI on the solar.
>
> There is a general debate going over here as to whether to earth battery
> negative or leave the battery bank to "float"
>
> Up to now I have earthed negative in every install.
>
> Comments appreciated
>


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