kWh Metering [RE-wrenches]
Travis Creswell
tcreswell at ozarkenergyservices.com
Sat Jan 5 15:33:15 PST 2008
My apology, I should have mentioned that "little" detail. We've mostly used
them for off-gridders so that didn’t even occur to me to mention that don't
read both ways. Good to hear they are coming out with a product to resolve
that issue. Even on the grid tied jobs they provide a tremendous value.
William, you're not implying they are inaccurate, right? I actually found
them to be very accurate especially for a product in that price range. Can
I'll assume what you're saying is they aren't accurately telling the whole
story since they can't read both ways, right?
I'm not following you about installation constraints in the "meter combo". I
suspect we have a different MDP /metering arrangement then you do as I've
always had plenty of room.
Bottom line to me is that it's a "whole house" Kill-A-Watt meter for less
then $150 that can be installed in minutes. I think that a TED or similar
product should be installed for at least 6 months before someone installs
solar. Educational value as it relates to conservation of this type of
device should frequently be staggering.
Keep you head down out there!
Travis Creswell
Ozark Energy Services
-----Original Message-----
From: William Miller [mailto:wrmiller at charter.net]
Sent: Friday, January 04, 2008 12:58 PM
To: RE-wrenches at topica.com
Subject: RE: kWh Metering [RE-wrenches]
Friends:
I ordered several TEDs and installed one at my home. I had to send most of
them back as they did not provide accurate information. The current
sensors can not differentiate between current flowing in or current flowing
out. During the day, when I am selling to the grid, the TED thinks I am
buying. This skews the running total and negates many of the benefits of
this device.
Since I am-- and most people are-- feeding back through a breaker on the
bus, there is no location to install the current sensors that will isolate
the consumption feed. The good news is the TED 5000 is supposed to come
out this month and it will purportedly resolve this issue. There is no
mention of the TED5000 in the on-line store. From the TED FAQ:
Q. I have a Photovoltaic System and I send power back to the grid. Does TED
perform net metering? A. No. TED1000 does not perform net metering.
TED5000 will perform net metering.
Installation was also problematic: In a standard flush mount
meter/main/combo there is not enough room in the customer side to install
the current sensors. I opened the utility side and put the sensors on the
underground feeders, but if I get caught I will have to remove them. I
would not do this for a customer.
Additionally, two of my TEDs came without firmware, requiring an
exchange. The company was prompt and apologetic in making the exchange.
In summary: The TED interface is great and I kept one to monitor night
time loads. The physical product is well made. I hope the new model
solves the issue described above. If so, I want one for my home and I will
offer them to customers.
William Miller
At 06:33 AM 1/4/2008, you wrote:
>http://www.theenergydetective.com/index.html might be just the ticket.
>Cheap and easy to install. We've used a qty of these and are really
>impressed with them. The only trouble I've had is at my own house where
the
>local COOP uses a remote meter reading system (Turtle?) and the read pulse
>caused mine fits. They claim to have resolved this issue with new models.
--
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