Recent Posts

Pages: 1 ... 8 9 [10]
91
TED Pro Support / Re: Spyder CTs
« Last post by PVAndy on February 17, 2018, 10:34:53 PM »
I have seen this misconception in several post in this forum.  When talking about a dual pole breaker which is typically used in 240V residential applications, A 50A 2 Pole breaker is 2 50A single 1 pole breakers mechanically interlocked.   Each leg of the breaker trips at 50A.  If one leg trips the other also is tripped.  In most 240V loads, there is very little neutral current.  Please explain why some appear to believe  that each leg of a 50A breaker only carries half the current and will trip at 25A

L1 
   120V
N            L1-L2  240V
   120V
L2 

Current from L1 going to a 240V load returns through L2  (not the neutral)

The breaker on L1 & L2 are both carrying the same current and will trip at the rating of the breaker.

When sizing CT's  unless the CT's are Extended Range CT (which many are) thr rating of the CT is the max current at which rated accuracy is maintained.

A 20A CT with an extended range  of 2 can be used to measure 40A loads.

Andy

Sr Electrical Engineer
92
TED Pro Support / Re: Best CT size for 2 pole breakers
« Last post by PVAndy on February 17, 2018, 10:02:31 PM »
?  How do you figure that each pole of a 2 pole 50A Breaker is only carrying 25A.

Typically 2 Pole residential breakers are used for 240V and each pole is rated and will trip at 50A.

Andy


93
TED Pro Support / Re: going solar
« Last post by toptek on February 17, 2018, 05:37:26 AM »
cool thanks i was told Net Metering ...
94
TED Pro Support / Re: going solar
« Last post by pfletch101 on February 16, 2018, 08:33:03 PM »
You should be able to add anything you need - probably just another main MTU/CT set for the solar feeds - but how easy installation will be depends on how your new PV system connects to your breaker panels and/or to the mains. If to your main panel, with a single bidirectional meter and Net Metering, you should have no trouble at all; if directly to the utility mains via a separate second meter ("Feed-in Tariff"), how straightforward it will be to hook things up depends on the details of the physical layout.
95
TED Pro Support / going solar
« Last post by toptek on February 16, 2018, 01:30:07 PM »
Going solar I was approved today for solar and was told it may take up to four month to be turned on an in about two to three weeks it will be installed

I have the Ted pro home do i need to buy a completely new package or just a few things for solar ? .
I would like to keep using the TED if i can with solar, i love it .


Harry
96
TED5000 Support / Re: Weather Data Missing
« Last post by Support7 on February 12, 2018, 09:49:33 AM »
Unfortunately this is a known issue as the browser's made some changes a little while back and no longer display the weather data correctly in the TED5000 and since it would take some software changes to correct the issue and the TED5000 is no longer in production, there's not a lot that can be done about it. The TED Pro system does address this by making use of that space for the optional Spyder add on so you will see your largest active Spyder loads where the weather used to display.
97
TED5000 Support / Weather Data Missing
« Last post by wmcole on February 10, 2018, 09:07:41 PM »
Has anyone ever gotten weather data to display?  If I go directly to weather.gov with my zip code, it displays local weather data, but Footprints just has blank space where it should appear.

Gateway Version 1.0.499
Daughterboard Version 1.0.115
Footprints Version 1.0.281
MTU Version 1.0.61

wmc
98
A few years ago, I had a 7.2 kW J1772 Level 2 charge station installed.  At 240 Volts, in theory this would be 30 amps.  However, with the Leaf and the Volts that I've had, neither one would accept higher than about 3.3 kW, so they were not drawing that much juice. 

[edit: not 100% sure this answers the question, but at least clarifying: it is 240 Volts, not 120.... also, installing the 240 Volt equipment in my garage kind of forced the issue, along with my solar system, battery system and everything else, so an entirely new panel in my garage from when I moved into the house.]
Yep, that answers my question.  So you your case you're less than 15 amps, that's not bad at all.  Less than I expected.

Yes, I think it's both vehicle and equipment and electrical system dependent.  I had a friend visit who was driving a Tesla Model X and the Teslas are known for fairly fast AC charging, if the output can provide it.  So, I don't recall the exact numbers, but I think he was drawing something like 30 amps, in that case.
99
TED Pro Support / Re: Larger CT Dimensions
« Last post by Support7 on February 09, 2018, 08:53:29 AM »
The largest inside diameter CT's we offer is 1.25 in the large 400A CT. We do have Regowski coils that are much larger but they are designed for commercial use and are a bit more expensive.

CT dimensions: http://www.theenergydetective.com/downloads/dimensions.pdf

Regowski Coils: http://www.theenergydetective.com/2000rc.html
http://www.theenergydetective.com/5000rc.html
100
A few years ago, I had a 7.2 kW J1772 Level 2 charge station installed.  At 240 Volts, in theory this would be 30 amps.  However, with the Leaf and the Volts that I've had, neither one would accept higher than about 3.3 kW, so they were not drawing that much juice. 

[edit: not 100% sure this answers the question, but at least clarifying: it is 240 Volts, not 120.... also, installing the 240 Volt equipment in my garage kind of forced the issue, along with my solar system, battery system and everything else, so an entirely new panel in my garage from when I moved into the house.]
Yep, that answers my question.  So you your case you're less than 15 amps, that's not bad at all.  Less than I expected.
Pages: 1 ... 8 9 [10]