We get a couple of calls a week about solar. The scam is that they
lease to you and they reap most of the benefits and tax credits.
Potential problem selling your house after 10 years when you have a 20
year lease on the solar panels.
You can buy outright, but payback is long.
There was one company that not only leased the panels but handled
maintenance and repair if the system ever needed it. They get the tax
credits and a monthly fee, you get lower power bills and someone to
handle the big stuff on the system (I'm sure you still have to do some
stuff). Sounds like a case where both parties benefit.
I would have looked deeper in to them, I think it was Sun City, but they
don't service my area.
There is a web page devoted to the pitfalls of solar. If you ever get
serious, check it out. Find out who pays to remove and reinstall when
you need a new roof, selling your house, etc. Remember the "free lunch"
Not only that, but the deterioration really starts setting in about 10
years after initial startup if you live in a densely populated area,
not sure about the countryside. The surfaces get etched by smog, and
acid rain. So payback if done properly is in about 10 years, and then
you can operate at about 50% for really free, or startup the vicious
cycle all over again but with new technology.
The real beneficiaries of solar power is big business and large
commercial properties who have to pay demand charges for their
electricity. Those charges are truly excessive so solar power payback
is quick under those circumstances.
Not totaly true, my tank has galvanized nipples that goto the tank.
They had plastic inserts, that I did not understand at the time and
removed thinking they were protective plugs.
They are to keep the water from the leaded galvanized pipe.
They are glued in, and I could not remove the nipples, even with heat.
My old water tank had galvanized nipples too, w/o the plastic inserts. I
guess before they realized that. So hot water is not always the same as
And don't mix above the plastic iron and copper. It will cause
ionic current and ions. They get to the tanks with / without plastic
Happened on two heaters here. Lasted almost 10 years and the iron
adapter (shade tree owner plumber before me) in both. I had
replacements and the pipes cleaned up and replaced where needed. No
iron. Plastic outside and copper inside.
On 1/31/2016 3:57 PM, Leon wrote:
Galvanic corrosion is caused by two or more dissimilar metals coming
into contact with water. When this occurs, one of the metals becomes
an anode and corrodes faster than it would all by itself, and the
other metal becomes a cathode and corrodes slower than it would by
itself. The copper supply line is the cathode and the galvanized
nipple is the anode.
A dielectric nipple prevents the two dissimilar metals from contacting
each other where water is present because the nipple is encased in
plastic. The plastic is not only on the inside of the nipple but also
extends past the end of the nipples. One of the side benefits of using
dielectric nipples is that you seldom have leaks because the plastic
ends act as washers and compress against the seat as the nipple is
Looks to me like the dielectric coupling was doing its job just fine.
No signs of leaks and the galv piping was getting messed up like it
You can see the flow restriction inherent in the design of the
dielectric nipple, and it is considerable.
If I were to install one I would up it in size to the next largest
diameter and use bell reducers on both ends to eliminate any problems.
Side effect would be an increase of electrical resistance, a bonus.
ROTFLOL, Sorry Walt, but you are as wrong as wrong can be. Think about
it, anytime you put in a fitting with a diameter less than the piping
around it, you have created a restriction. If you cannot understand
3/4" Camco dielectric nipple I.D. 0.75 in
3/4" type M copper pipe I.D. 0.811 in
Difference .061 or ~3/50 in
So by all means, you go ahead and "use bell reducers on both ends to
eliminate any problems".
BTW, nice sink!
If I remembered correctly I stated to upsize the nipple to the next
piping size to eliminate the restriction flow, and use bell reducers
to install it into your installed piping size. That would mean use a
1" nipple on a 3/4" piping system.
Yeah, I thought the color would go good with your lifestyle. :)
And except for wasting money, you will have accomplished absolutely
nothing by doing that. You really don't get it do you?
Dielectric unions/nipples are used to prevent two *dissimilar*
metals from contacting each other where water is present. By you
connecting a *steel* 1" dielectric nipple between 2 *steel* bell
reducers you've accomplished absolutely nothing (except look foolish).
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