If you are doing Off Grid is it enough just to drive two ground rods? and make
a connection between them? Also what is the lowest Ohm reading your DGC
1000 meter can read?
Thanks
--- On Wed, 9/15/10, R Ray Walters r...@solarray.com wrote:
From: R Ray Walters r...@solarray.com
Subject: Re:
According to the Enphase website (/support/faqs):
The Enphase Microinverter manual states that the device is positively
grounded. Don't most PV modules have negative grounds? Is this a problem for
Enphase?
Enphase made the decision to positively ground its microinverters to
minimize corrosion.
2 electrodes lets you off the hook for NEC, but not with the lightning hurling
gods.
New Mexico code has actually dropped the 2 rod rule as well, you have to
install a Ufer ground in all new construction there.
WIth dry rocky soil, your impedance with 2 rods can still be hundreds of Ohms.
The
Yes, Enphase bonds the DC positive to ground in their inverters. This allows
them to work with all modules, including SunPower.
Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell: 707-321-2937
Office: 707-789-9537
Fax:707-769-9037
Benn - I like installing j-boxes under the array as a general rule both for
aesthetics and to keep them somewhat sheltered from the elements. I do not
see any code issues with the location because, as you mention, they are
still accessible.
From NEC2008 Article 100:
*Accessible (as applied to
And more specifically:
690.34 Access to Boxes.
Junction, pull, and outlet boxes located behind modules or panels shall
be so installed that the wiring contained in them can be rendered
accessible directly or by displacement of a module(s) or panel(s)
secured by removable fasteners and
Bill and Peter,
I stand corrected. Tankless units do not modulate to zero. What a shame.
My Takagi needs AC power to the exhaust fan in order to operate. I will be
installing an aquastat relay on my solar storage tank that removes power to
the Takagi when the solar tank is at or above 110
Bill,
I checked with Delta and they say the LA's are designed to be mounted
inside, or, outside the box. On their product sheets that came with the
arrestors in years past they clearly showed the LA's inside the load center.
In fact that is the way they are still showing them used on their
Hey thanks for the feedback. Looks like the definition of accessible is
pretty much the same for the CEC and NEC, and NEC's 690.34 gives this method
the go-ahead.
DayStar Renewable Energy Inc. b...@daystarsolar.ca780-906-7807 HAVE A SUNNY DAY
Date: Wed, 15 Sep 2010 12:28:49 -0400
From:
Brian,
A GEC with no splices, or only irreversable splices, has only two ends. If you
need to find them to check their integrity, you know where to look.
No argument about acorn clamps. Exothermic welding might someday be required.
Dick Ratico
Solarwind Electric
--- You wrote:
Inspectors in
Hi Nick,
Last time I checked Evergreen modules don't work with positive ground systems.
jay
peltz power
On Sep 15, 2010, at 9:19 AM, Nick Soleil wrote:
Yes, Enphase bonds the DC positive to ground in their inverters. This allows
them to work with all modules, including SunPower.
Nick
I just remembered that I've seen Deltas pre-installed (by the factory)
within Satcons- at least the 50s, and I think they're in the 250s as
well. I guess they'd look a bit weird sticking out of the cabinet!
Dave Palumbo wrote:
Bill,
I checked with Delta and they say the LA’s are designed to
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