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Installation of our home/office PV
system
(double click on pics to enlarge)
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| We installed the modules in a weekend, in January of
2000. Two people did it--but it would've been nice to have had
more muscle to help! We hung it off the soffit on the south facing
side of the office. |
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| The battery box was constructed out of 5/8ths and 3/4 inch
plywood; the bottom was constructed out of 2 x 6s on 12 inch centers,
insulated and mounted on casters. From October to March we add
fiberglass insulation on the sides and top of the batteries. This
box holds 16 of the Surrette 6V, 438ah batteries (weighing 120 lbs
each). It's passively vented through a 1.5" PVC pipe from the
top of the battery enclosure, topped by an 18 ft. stack painted black to
encourage venting. |
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| Making cables: this "brute hammer tool" is
mighty handy! I made all our own battery interconnects and
inverter cables with this device; heat shrink was added to all terminal
connections. |
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| The batteries in the box: I made the end of the box
removable for placing the batteries into the box and any maintenance
requirements; the box was lined with plastic and sprinkled liberally
with baking soda as a safety precaution. This installation, by the
way, is in an unheated garage/shop. |
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| I made cutouts of the various components so I could figure
how they'd fit on the backboard that I planned to mount them on (a
3/4" chunk of plywood). Here's me praying to the renewable
energy gods. |
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| Everything seems to be fitting okay.... |
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| Hey, THIS STUFF WORKS!!!!! |
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| The last summer rainbow at the Oasis. Must be
getting time to put up the Air 403 wind generator! |
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| The beginning of the wind genny project was to have a 6
ft. hole excavated; here's me pitching some rocks from the bottom of the
hole, in preparation of erecting the timber (to which the schedule 40
pipe that holds the Air 403 gets attached to). This was a warm
October day (husband Ace said I had to put at least one "hot
babe" pix in with all this dull installation stuff).... |
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| The timber and the excavated hole: time to get some
help to set this thing in place..... |
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| It's good to have good neighbors! This log was
HEAVY. Thanks to Doyle Bailey for his great help. |
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| Looks good, and is quite straight; the evening we put this
up, we had a freak storm--with wind gusts as high as 80 mph! But
the timber didn't move an inch (even though it was only 2/3rds
backfilled). A good test for future conditions! We watered
the pole in for a few days, and tamped it around the base as best we
could. We'll leave the rope to the tree in place until next year,
so the base of the tower can "settle in". |
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| The wire runs for the wind generator were #4 gauge
wire--and it took some looking around to find this (locally, only
aluminum wire was available in larger wire sizes--and copper has much
greater conductivity than aluminum). Finally it arrived, and we
were able to mount the wind genny on our "tilt-up" tower
design. Note the wires hanging out of the pipe. |
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| We pulled the rope and watched the wind generator go 'way
up! Well, this is only a 30 ft. tower, but it seems very
tall. A one hundred foot tower must be just awesome..... |
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| Here's Ace Johnson, spouse and hands-on helper par
excellence, attaching the fittings that hold the schedule 40 pipe (and
the wind genny) in place. We looked at some regular conduit fittings,
but they weren't heavy duty enough--so a welder friend of ours (Tony
King) came up with heavy duty fittings that worked beautifully. |
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| Whew, quite a day's work. LOOKS GOOD. |
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| The electrical enclosure at the base of the schedule 40
pipe holds a silicone oxide varistor (surge protector); there's a buried
ground rod at the base of the tower, too. You can see the trenches
for the wire runs here. From here on out, the installation of the
wind generator was done in October/November 2000, when the ground was very
frozen. |
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| We originally had a Trace DR1524 inverter, but
decided to upgrade that to a Trace PS2524 sinewave inverter and make
this a net metering system; here we are with the new inverter,
wiring the AC output side to its separate sub-panel. |
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| Almost done with this upgrade..... |
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| Here's a view of Oasis Montana in winter; everything works
great, and passed electrical inspection (Nov., 2000) with flying
colors. I just wish we had more wind and sun. |
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