ENERGY & ENVIRONMENT
(Page 4 of 5)
Using wood is nice because it allows for a certain amount
of flexibility in the rig. Different types of panels are
easily mounted. Some of our panels, for instance, have
aluminum frames with predrilled holes, which we attached
simply by drilling through the oak and fastened with
carriage bolts. The other panels only have small plastic
frames that were mounted with screws and neoprene washers,
pinching the edges of these frames in several spots.
RELATED CONTENT
Making a homestead on2.5 acres just outside of Tallahassee, Florida....
Is your garage cluttered with leftover wood, drywall or paint? Are you not sure what to do with ext...
Making a simple kite from recycled materials is fun and inexpensive. And there’s nothing quite like...
All around you there are sources for free or inexpensive materials that are perfectly suitable for ...
Build Your Own Energy Materials Imagination May/June 1970 Resort to ecological principles: MONEY DO...
With the wood in place, mount and wire your panels. Next,
attach an end of a piece of 1/8" cable to a hole at an end
of 1b using a cable eye and two clamps. Mount your hand
winch to a comfortable spot at the base of the pole. With
the array turned fully to the side where the cable
connection is up in the air, cut the cable at the winch and
connect it properly to the winch spool.
Now connect another cable to the hole in the other end of
lb in the same fashion as above, and crank the winch
turning the array fully to the other direction. Place a lag
bolt into the pole above the winch at about shoulder
height, cut the cable dangling from the side of lb now high
in the air, and put a loop in the end so that it may slip
over the lag bolt. When the array is fully turned with the
winch, the cable loop in the lag bolt will keep the array
snug so that even strong winds won't swing it around.
Place lag bolts at several other positions down the pole so
that the loop on the loose cable may be changed from one to
another, effectively locking the winch on these positions
throughout the day. Be careful not to overtighten the rig
with the winch—just a little tension works fine.
Back at the top of the pole, attach at least three guy
wires to the top pole pivot with two clamps each. Run these
to stabs driven deeply into the ground (at least three
feet), and put turn buckles into the guy wires near the
ground so they may be tightened occasionally.
Finally you must protect the rig against lightning strikes.
Drive your 8' copper or galvanized ground rod into the
ground at the base of the pole. Bolt a large copper wire (I
used 3/0 copper and I wouldn't suggest less than 1/0
copper) to the spine (2a), and run this down and attach the
other end to the ground rod. This is a separate ground from
your system ground and should take direct hits right into
the ground away from the system. We also have a system
ground connected to the negative side at the battery, have
fused disconnects coming from the panels on the positive
leg, and have a low voltage lightning arrester before the
fuse. This is an adequate ground. Some installations run
multiple ground rods from the array frame in every
direction, but this strikes me (sorry) as a bit of
overkill. The rod's ultimate purpose is to discharge an
occasional and unwanted direct hit, not to provide
the ultimate encouragement and opportunity for every
passing thunderhead by saying, "Hey, look at this great
discharge spot over here!"
Page:
<< Previous 1 |
2 |
3 | 4 |
5 |
Next >>