Ben,
There is a way if the ledge is solid and true. Twice I have done the following
with ledge at 18” to 24” below grade. Excavate down to ledge, drill down into
the ledge and you will determine the suitability of the following method. Drill
for a pattern of many rebar penetrations in to the le
We have hit rock at 24-30” on several installs over the years and drilled in,
hammered in set rebar with concrete epoxy & in the case of a tracker got an
engineered base designed with it pinned to the rock.
Dana Orzel Great Solar Works, Inc.
C - 208.721.70
If you can get anchor bolts in, you can weld on a 1" think plate with
gussets to the bottom of the pole. We've had to do this a couple of
times in rock. We'll pour enough concrete to get a level base, but the
bolts are epoxied into holes in the rock. A good epoxy anchor is
stronger than the b
A pole mount can be part of a virtually tracked array system. Gives long
hours of power, if that is the reason she wants this. It can be angled for
SW 9 months and go south for the winter. It needs another array or combo of
arrays for SE and S. If it is some other weird reason she wants this, I
w
Hi Wrenches,
We typically use SunModo ground mounts with ground screws which we can put
just about anywhere as our screw guy has a rock drill.
We have one customer who is dead set on a top of pole mount array and will
not settle for a typical ground mount with multiple posts.
There is shallow ledg
William - As others have pointed out, there are all sorts of factors that
would increase or decrease energy consumption for an AC unit. I like to
refer to the Energy Star guide to get an idea of average annual energy
consumption:
https://www.energystar.gov/products/most_efficient/central_air_condi
Hard to tell what the future may hold, but an I-V curve test would let you see
performance now and across the board.
-Glenn
-Original Message-
From: RE-wrenches On Behalf Of Ron
Young
Sent: Wednesday, June 23, 2021 5:03 PM
To: RE-wrenches
Subject: [RE-wrenches] Solar panel impact
See
Seeking the wisdom of the wrenches. I had a stack of 20 330 watt HIDM panels
leaning against a shelf in my store window. An out of control vehicle slammed
into the front of the store and all 20 of the panels were knocked to the
ground. They kind of fell as a unit and the top of the first panel l
William,
The LRA of an A/C system is the peak current demand. The inverter must be sized
for that and all other potential loads if using a single inverter. For that
reason, we have almost always used a dedicated inverter for an A/C systems and
leave the primary inverter for all other loads. Tha
No laughing here about AC! We only use the best SEER mini-splits for
offgrid. Even large homes can be done this way with separate split units. I
never use a multizone split as they are down the list energy wise from
single 1 ton/12000 btu. Look for 30 SEER. Only the best models from LG,
Fugitsu,
That's a tough call without monitoring, and the difference will be huge
depending on SEER rating, insulation, usage habits, and location. You
really have to consider worst case, not averages.
For example, at home I have an older 5-ton, 13 SEER in SW Florida, one of
the most challenging areas in th
Friends:
In the old days when a client suggested they might want to run air
conditioning equipment on an off-grid system we would just laugh. Now I
find I get that request more frequently and clients are willing to pay to
acquire enough system capacity to run AC equipment.
This means I need
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