I have several LED lights, mostly AC, and I'm a big fan.
The light quality approaches that of halogens, and the watts are
noticeably lower than CFLs.
I have spot lights, floods, and rope lights that I forget to turn off
because I can.
LEDs have come along way in the past year.
I have a hand hel
In the early days, LED's were rated by the candela and so everything was
apples and oranges. Long time ago, I used an LED to allow boats to navigate
into a narrow passage by lining it up with a second one a distance away. You
didn't have to read a map by it, just see it. As you said Alan, with
Chri
Hi
In Tunisia there is a net zero energy retrofit project in 4 health
facilities. The exisitng lights were mostly ceiling mounted 34 W
Flourescent tubes and 20 W tubes. We replaced them with 20 W and 10 W LED
tubes. The LED tubes are more like task lighting that directs the light
onlyt downward, c
I don't know anything about RV systems but as to LED lighting in general,
we recently sold and installed 130 LED fixtures in a large villa to replace
MR16 lamps, saving the client over 6KW of load. The light output is better
than the MR16, there is no heat, and they were very cost effective
replace
Hey Dan,
Great point. You just reminded me of the PV solar powered billboard lights I
installed about 2 years ago. They are 120 Vac, 50 watt LED floods. So far they
survived two Yuma, AZ summers with temperatures above 115°. During my studies,
I learned that heat dissipation by the fixture was
The fixture - and putting the correct lamp into it - is more important as
efficiency IMO. Some lamps burn out very early in the wrong fixture.
My recent article in the Huffington Post sums up my view:
http://www.huffingtonpost.com/dan-r-fink/energy-efficient-lighting_b_1961945.html
That said, I'm
You know, what baffles me - and may be
the reason for the generally-accepted view that LEDs have really
high efficiency - is why LED Christmas lights use so little
energy. I have a couple of strings over our front porch that we
never turn off, day or night, at our
I have the T8 LEDs in my house and garage, I've had them running for a year or
so, I'm not home to check the brand, but I really like them for the shop,
especially come winter. I'm by no means a lighting retrofit guy, so maybe I
just bought into a tech to soon, but they seem to work good for me
here in mount shasta woo-woo land, there are loads of folks who hate
fluorescent lighting (never mind that they never notice fixtures with cfl's in
them). they are all smiley though about leds (go figure).
my experience with leds is the lumens/watt is still no greater than a good
cfl/hid lamp
Mick,
I ALWAYS go with AC lighting. The cost/watt of the extra power to operate AC
lighting is minimal compared the the hassles you have, and will experience
again, trying to go DC. If the customer needs lighting to be always available,
go with a small dedicated inverter for the light circuit s
Have you tried the generator with the inverter? I find some live together
just fine, and some trip out on over voltage. It all depends how the
voltage is regulated on the generator. Also, if there is constant load such
as air conditioning, you probably won't have an issue.
On Wed, Dec 5, 2012 at
If you can live w/o power at the garage during genny support, then simply
connect that circuit to the Line side of the ATS. If that is not an option then
I might look into narrowing the PVI AC window from 216V (low end) to 220V, this
assumes that the utility is at least 230V. Then set the genny
Hi, Knuckle-Busters~
It's lighting retrofit time and also time for me to review "what I thought
I knew" about various lighting technologies.
+
Round one of the conversion involves >>well known RV brand<< T8 tubular
fluorescent fixtures (3' long single tube). These have 24
We never answer tax questions. We always refer the customer to a tax
professional. You can get in some pretty big trouble giving tax advice and
open yourself up to some serious liability.
__
Will White
Reg
Fellow wrenches-
If a customer who has a pv system which was installed before this year adds to
the system, say a Sunny Island and batteries (but no additional modules), does
the new equipment qualify for the tax credit or must he order more modules as
well?
Is there a minimum pv wattage to qual
boB,
If the cells are still "capable" of 80% or more but a defect is in cell
interconnection, junction box or whatever is preventing output, then the power
warranty does not apply.
Example: The 1999 through 2002 Kyocera KC120-1's have been failing in the
thousands. A poorly soldered contact o
Hi All,
I am looking for options for controlling a disconnecting relay for a
grid-tied inverter. It is a PVI5000 so 30 amp 240vAC. I need to
disconnect it when the backup generator gets kicked on by the Automatic
Transfer Switch when the grid goes down. The array is on a garage that is
several
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