Review: Monitoring Power Usage With TED 5000-C Part 1

I’ve been wanting a way to monitor my home power usage for a while and recently did a lot more research. The folks at TED (The Energy Detective) had a selection of products which rated well and I ended up buying the TED 5000-C.

These are not installation instructions, just showing you how I installed my unit. Always follow the manufacturers instructions.

With that said, TED’s selection of products vary from the pretty basic to some pretty snazzy equipment. I went for the TED 5000-C system which lets you monitor one set of mains power lines and includes a nifty LCD display. I searched around for other options, and there were some pretty high end units which allow per-circuit monitoring, but you pay for the price. The TED with the display was around $240/USD and as package can monitor one 240VAC circuit or 120VAC. The most common usage is to monitor the main feeds into a persons home.

If you have an X-10 unit used to control your home lighting you may wish to check the TED support forums in advance. I’ve read that since TED uses power-line transmission for it’s data like X-10 does, it can cause erratic behavior in some X-10 switches and units, causing them to turn on and off at random times. It’s best to read the forums or contact TED and find out what the conditions are before investing in a system. I don’t run X-10 at home and have been looking at other brands of devices that don’t use power-line transmission so I am not too concerned about it.

I ordered the TED 5000-C on the Nov 14th and received it today, Nov 22, despite some possible back orders on their end. This gave me some time to read over their website and user support forums to see what sort of things I might expect to run into. As with most support forums there were a lot of requests for support with good answers, or answers found elsewhere on the forums for questions which have been asked multiple times. My impression from just reading the forums is that they seem to be putting in an effort for supporting their customers.

Here’s what I got in the mail today. Oh sweet I can hold the LCD Panel while adjusting my thermostat! I though it would have been cooler to push a button on the LCD display and vaporize my power bill, but it’s not going to be THAT easy. (Click pictures to embigginate them)

Open up the lid of the box and you’ll find 3 nicely packed sub-boxes. One box for the MTU components, one box for the Gateway Unit and one box for the LCD Display unit.

Taking a closer look at the components we’ll start with the MTU and the CT. The MTU (Measuring Transmitting Unit) is a small box that will live in or near your main electrical panel if you are using it to monitor your household energy use. The MTU is relatively small and unless your electrical box is packed you should have no problem finding room for it. Additionally the MTU box also contains the two clamp-on CTs(Current Transformers) which are used to monitor your 240 volt power feed into your home. Most often in the US and Canada a home power feed consists of two 120 volt lines which are 180 degrees out of phase with each other, so you get a clamp for each line. The clamps have a red dot on them, the red dots face towards the incoming side of the lines(towards the power meter). As you’ll see in my photos later, I actually had them upside down. I don’t think it should technically be a problem as long as both face the same way, but I flipped them the other way as per the manufacturers specifications.

In the next box is the Gateway. This is a rather unimpressive looking unit. The entire unit is built into shell with an Ethernet network connector, some LEDs and a 3 prong electrical plug. The LEDs near the Ethernet port show network activity. The LED on the right side of the box shows communication status with the MTU (it should blink about once per second when operating properly) and the LED on outward facing side shows connectivity to the LCD display. If no LCD display is present, then the green light stays solid, otherwise it blinks about once per second as well.

The final package contains the LCD Display unit. The unit is shiny and it has a base docking station with charger. The unit is able to be removed from the base station and carried around with you. I have a blue-tooth headphone transmitter in my living room which seemed to interfere with how far away I could carry the LCD display away from the Gateway. Some experimentation may reduce the signal and improve the range and I’ll make sure to update this post with the latest information as I go.

One thing that isn’t included in the package is a two-pole circuit breaker which you may need if you’re installing the TED in some locations. It depends on what your electrical code approves of. Some electrical codes will allow you to connect the TED power supply lines to an existing 2 pole circuit breaker, others may require that you use a standalone breaker. As I could not find the code which this was specified in, I decided to go the safe route and buy a separate breaker for the TED MTU. The breaker cost around $15 at Lowe’s.

Please read the installation manual and don’t use this as installation instructions, but simply a story on how I installed and got my TED 5000 up and running. Every situation is different, however what is almost always true is that working in your electrical box can be hazardous if you are not used to working with the voltages and configurations involved. I have experience working with multi-megawatt high energy / high-voltage capacitor systems, high voltage projects, and even some limited household wiring experience as well and I know how to be safe. If you’re not sure, hire an electrician for this part.

Below is a picture of my electrical box with the panel removed. You can see the breakers, and the wires going to the breakers. The feed lines are the big black lines at the bottom which come in from the right. The left and right lines are the 120 Volt feeds and the center line with the white tape wrapped around it is the return which is tied to the ground and neutral bars in the breaker box. This is what’s called a combined box meaning that the main breaker and sub-breakers are in the same panel. Even when you turn the really big breaker off for a combined box, the 3 silver colored blocks that the thick leads go into will still be energized(!).

You’ll notice in my box on the left hand side that someone used a black wire and a white wire to make a 240 volt circuit, but they didn’t bother marking the white wire with black tape which I’m pretty sure is a no-no in electrical circles. In some places you’re not even allowed to do that. That was corrected before I put the panel back on but it may have to be replaced with a proper red and black wire set to make it legit.

I connected the leads to the two-pole circuit breaker in advance. The red lead to one side and black lead to the other side and made sure to screw the terminals nice and tight. I connected the return wire (white) to the return bus bar in the box and after making sure the new circuit breaker was off I carefully installed it into the box.

With the breaker installed I installed the CT (Current transformers) around the feed lines. This is the area you have to be very careful about in a combined box because there is always live voltage with more than enough current to roast you and kill you pretty good. Again if you don’t feel comfortable doing this, get an electrician to do it for you. The clamps are supposed to be positioned with the red dots facing down the feed line towards the meter. I originally had them upside down, but the readings were the same either way. TED says if they’re upside down they’ll read wrong, but I think it’s mostly important to have them both face the same way as my reading didn’t change any after I flipped them over. When in doubt just follow every word of the manual!

I mounted the TED MTU box at the top of the electrical box and connected the MTU power cable from the new circuit breaker and the cable from the CT’s into the MTU itself. They are keyed and only go in one way. Look at the keying before you connect the box though so you don’t bend anything up.

Once that was installed I flipped on the circuit breaker and green LED on the MTU started flashing. I then proceeded into the living room, grabbed the TED gateway and plugged it in the nearest place that I had an open outlet and a network cable. I then went to my web browser and typed in ted5000 into the URL bar and the TED Footprints interface came right up. After setting the serial number for the MTU and Display, the MTU was communicating, I was seeing power usage, all was good. The display is another story, but I resolved that as well as you’ll see a bit further down.

Then I downloaded the latest firmware update from the TED website and sent it to the TED module. You have to install the Gateway firmware before you install the Footprints software, which I did. Once I had updated the software the Gateway and MTU quit communicating. It drove me nuts for a bit, but then as a sanity check I grabbed the TED gateway and plugged it into an outlet near the electrical box. Immediately the green light on the side of the TED 5000 Gateway started to flash indicating it was receiving data. I brought the Gateway back to the original plug and disconnected the power strip that was below it, which solved the problem. And I got great info like you see below!

Because the TED 5000-C uses power line transmission it is a bit sensitive to interference on the circuit it is trying to communicate with. Additionally a circuit which has filters, suppressors, UPS (battery backups / uninterruptible power supplies) are not TED friendly and can cause interference or actually filter out the power line transmissions which are used to transport data from the MTU to the TED Gateway. Apparently for some reason the TED could work on that outlet with the other devices connected with the older firmware, but the new firmware made it more discriminating and made it look like my TED 5000 was busted (oh no!). If in doubt plug your TED Gateway into another outlet and see if the green light on the side starts flashing again.

Now that I had the MTU and the Gateway communicating, I had to figure out why the TED Gateway couldn’t talk to the LCD Display. The display was powered up and sitting on my desk about 15 feet from the TED Gateway. I picked up the TED LCD Display and moved towards the Gateway and all of a sudden the LCD display came to life with the proper date and time as well as showing power statistics… when I was about 3 feet away. Okay, that’s frustrating, what’s going on?

Since the TED Gateway links to the TED LCD Display via a wireless link the first thing I did was check my most suspicious wireless device nearby. This is the BlueTooth headphone transmitter which I use for my computer. I brought the LCD display back to my desk and removed it from it’s cradle and reseated it, again it lost the signal. (apparently it reconnects every time you remove it from the cradle. I’m not fond of this myself). I then disconnected the bluetooth transmitter from the computer and the LCD display immediately picked up and noted it’s communication by flashing a little green LED on it’s button. So finally all three components were working well together. The MTU, the TED Gateway and the TED LCD Display.

Overall the installation didn’t go that bad, though I think it could have gone better. I understand the reason for the communication methods they use as it can be viewed as a simple and low cost for communication throughout a household without having to wire Ethernet cable up and route it, etc. I think a WiFi capable version would be really nice, but then you would have the costs involved with building WiFi into the MTU (at minimum) and LCD Display (would be a nice bonus).

I’ve taken a bunch of screen shots of the display and footprints software and I will post Part 2 of this review tomorrow Nov 23rd or Nov 24th with information about the display, software, configurability and possible pitfalls. I can say right now that I’m pretty happy with this so far. Once I post the next part I will include a link under this paragraph and a comment. So make sure to bookmark this page and check back tomorrow. While your waiting please check out my other sites and pages linked to the right!