My next door neighbour has just installed 50, very little spare room
on the flat roof of his quite subsantial house, likely 25 squares.
And the individual panels are 1KW panels too.
That bugger doesnt do things by halves.
Varys with the panel.
It isnt that hard to do a synchronised inverter.
Not clear if you mean a physical switch, obviously a relay etc.
There doesnt have to be a physical switch in that sense.
Depends on the environment. We can get some very spectacular
dust storms so yes, you do need to clean them after that if you
dont want to wait for the next rain to clean them.
Anything from a hose to a proper pressure washer.
Ours do. We mostly have evaporative coolers
on the roof and the water works fine with them.
Nope. They dont add much to the weight of a tiled roof
and the strength of the timber used for a flat metal roof
is determined by the wind loading, not the weight of the
roof with a metal decking roof.
With a flat roof, there is a metal rail structure used to angle the panels
Thats just srewed to the roof structure with what we call tek screws.
With a tiled roof, there are still metal rails that the panels are mounted on
and those are attached to the roof stucture in a similar way. Most of those
panels are at the same slope as the tile, although strictly speaking its better
to angle them up more than that.
There is also another massive great system that I walk past for exercise,
out on the edge of town. Two great big square arrays that must be about
7x7 panels each tho I havent counted them. Each is on its own great
steel column and each array tracks the sun right thru the day. Quite
impressive to watch it start up at sunrise and shut down at sunset.
OK, it wasnt clear if what you left of the quoting was significant.
Yeah, but very few actually 'live' there.
The absolute vast bulk of people are in the SE corner and in a band along the
from Townsville thru to say Adelaide, so there is in fact a very wide range of
Your soggy little island has a much small range of lattitudes.
Yebbut, some of those arent all that low rainfall wise.
We've just seen the end of a 10+ year drought, with plenty proclaiming that
it was absolutely guaranteed to be the result of man made global warming.
Then we saw quite a bit of Brisbane under water when the fools that were
responsible for managing the dam that was specifically built to stop that
from happening, didnt bother to run it the way it was supposed to be run.
And Sydney has just seen its main dam overflow for the first time
in 14 years, now that we spent billions on a desal plant for Sydney.
Needless to say, the fools in govt that built that desal plant were
actually stupid enough to write the contract so that its still running
at full capacity even now that there is much too much water in
the main catchment and some have been evacuated because
their houses are about to be flooded out.
Panels are actually rated by their peak output, and are typically
in the range 100 to 260 Wp
The inverter is required to monitor the mains voltage and phase.
Its control electronics takes care of it. There are mandatory
requirements to be met by any installation connected to the
The panels will produce an output voltage whenever enough light
falls on them. As soon as the output is sufficient, then the
inverter turns on and produces ac output. This continuously
Formal instructions say that they should be cleaned periodically.
How necessary this is may depend upon the location and the nature
of any contamination.
I guess that, as the number of installations increases, there
will probably be firms appearing who will do this for a fee.
Not necessarily. However it would be prudent to get a written
waiver from building control. I required my installer to take
care of this.
OTOH a friend discovered his roof timbers had warped and were no
longer properly supporting the roof weight. This required
professional assistance and the addition of reinforcing
Depends a little on the exact design of your roof. In my case the
tiles were simply slid upwards to enable the stainless steel
brackets to be secured to the roof timbers. The tiles are then
returned to their original position. Mounting rails are fastened
to these brackets, and the panels then bolt onto the mounting
There is a great deal of information on the web, with photos,
videos, output predictions and so forth.
Chris J Dixon Nottingham UK
And of course if taking up the special offers you are restricted to a
certain number of panels and that is it, unlike, it appears Australia and
France, the latter where every seemingly available bit of space on farms has
solar panels on them.
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Ta all. The GTI you mention is interesting. Senses phase to within 1
deg I see. Also a disconnect feature to protect line-repair men should
there be a blackout - i.e to protect them from the inverter(s) output
still being up. Being electrocuted by the Sun is a right bugger :-)
We looked at having a solar installation but with a maximum of 6 panels on
the roof (mansard roof on a semi) the projected payback figures were too
extended to make it a worthwhile investment.
At the time (about 6 months ago) you needed about 10 to give a reasonable
return, and going up to about 16 made the figures a lot, lot nicer.
Either things have changed dramatically or a lot of people are finding the
same sort of cost/benefit a lot more attractive than we are.
I suspect many are doing it because if you don't get it now the FIT will be
cut right back, not because it makes sound economic sense.
No plan survives contact with the enemy.
[Not even bunny]
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