I just recently bought a clamp on ground impedance tester. I found one system
that was less than an ohm, worst one was almost 800 ohms. Only a few were
below 25 ohms.
You're absolutely right: good lightning protection starts with a good ground.
The impedance tester takes the guess work out of j
Jeff - We have a number of systems with exactly that configuration and we
haven't had any issues. However, we have not installed the XW/SB
combination since Xantrex (Schneider?) rolled out the firmware that
incorporates the high battery frequency shift to shut down the solar
inverter(s). We switc
Searching for opinions.is this "over design"?
Designing small system (2.35kW). Customer uses gas for heating. Typical A/C
unit. I was thinking of biasing the tilt to summer production for greater
offset of summer demand (lat 31.6, proposing 18). No net metering in this part
of the world. PVw
This last week I spoke with a cell phone tower installer. He said, Nothing beats the ground! he said the most important thing is the tower grounding, The idea of 25 Ohms to Ground is way to high. Ground rods are useless, and lightning arresters do no good without a good ground, in fact people who
Hi Jeff
I have used Outback inverters and not had a problem, I use both SB and PVP
for the AC side and a varity of connections on the DC side of the Outback.
Frankly I have had very good success, I hope it continues. I can not figgure
out why your system would act this way.
Darryl
--- O
Hi Jeff,
Use Outback off grid inverters for the backup, and break the AC from
the grid tie inverters. An advantage of this is that you can use a
standard generator and transfer switch to charge batteries through
the off grid inverters. The grid tie inverters take care of the anti
islanding,
As mentioned before, many of our clients want battery backup with their solar,
but are not off-grid. They also want a generator so battery banks can be
down-sized. For many of these applications we use a SunnyBoy at the array
when the aray is located hundreds of feet from house, and usually a
Hi Mick,
You might want to investigate the perennial classified (marketplace) advertiser
in Home Power who quotes "Siemens M 55 panels" at $225 ($4.10 / watt). His
phone, 760 949 0505, shows up in Google as a lawnmower service shop in
Hesperia, CA. As I remember, a SM 55 came with leads and the
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