Module grounding revisited [RE-wrenches]

[Jerry Caldwell]

We often ground the rack only.  Some of the ASE
modules we use have a thick coat of paint on the
frames, in which case we use the grounding disks
provided by ASE to ground the individual modules.

Astropower includes Professional Solar Products
aluminum mounting rails in thier packaged kits and the
Astropower installation manual says that only
grounding the rails is necessary.  I'm not sure, but
they might even have gotten the assembly listed as
such.

Jerry Caldwell
Light Energy Systems

, 
> wrmiller at slonet.org writes:
> 
> 
> > Therefore, if one grounds a rack frame, the
> modules being "secured to and
> > in electrical contact with" the racks renders the
> module frames
> > "effectively grounded".
> > 
> > Comments?
> > 
> 
> William,  My own on going test - experiment has been
> to rely on the frames 
> getting grounded by the rack. I too think the
> individual ground wire strung 
> panel to panel is stupid and a waste of time.
> Supporting this hypothesis is 
> 100% ground continuity to every module frame and the
> main rack. I have tested 
> every installation for ground over many years and
> never had an ungrounded 
> frame. And I have gone back to old jobs and checked
> years later. Still good 
> continuity.
> 
> I think the language you found clearly gives the
> option to ground the rack.
> 
> Don


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