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| Monitoring total usage in home with two circuit panels http://currentcost.com/support/viewtopic.php?f=10&t=3055 |
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| Author: | iamsteve [ Wed Oct 05, 2011 3:46 am ] |
| Post subject: | Monitoring total usage in home with two circuit panels |
(I am located in the USA) I have an ENVI energy monitor with a single transmitter and two current transducers (plus a web bridge). The transmitter has 3 sockets total and I am using 2 of them for the 2 current transducers. My home has 2 independent 200A circuit breaker panels, each being fed by a 240V single-phase pair of wires. I can clamp the current transducers on one or the other of the 240V feeds and monitor the energy usage of just that one panel, but what do I need to monitor both at the same time? Do I need to buy a second transmitter and 2 more current transducers? (If so, what are the part or model numbers of what I need?) Will my monitor be able to display (and hopefully total) both circuits? Can I do something "clever" like clamp one of the CT's on a single wire of one feed and the other CT on a single wire of the other feed and then double the displayed Watts? (I am thinking this might actually work if I clamp on the opposing phases.) Thanks! |
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| Author: | Automan [ Thu Oct 06, 2011 4:12 pm ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
Are both panels fed from the same electric meter? If yes, can you move the clamps and transmitter to that location? Automan. |
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| Author: | iamsteve [ Thu Oct 06, 2011 11:21 pm ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
Yes, they are both fed from the same meter, but I do not have access to the wiring at that location (it is inside a locked metal box that only the utility company can access). |
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| Author: | SeekerAfterTruth [ Sat Oct 08, 2011 3:16 am ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
| Author: | Automan [ Sat Oct 08, 2011 11:53 am ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
American households typically have a 3 wire single phase and neutral system. 220v between the phase lines and 110v between a phase line and neutral (the 220v needed for larger appliances e.g. the cooker, washer / driers and ac units). Thus they need two clamps on the two phase lines to measure the house load. In the UK a property would typically have a single phase and neutral system giving you about 230v (one clamp on the phase line) or a three phase and neutral system with 415v between phase lines and 230v phase line to neutral (3 cc clamps on the phase lines). Automan. |
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| Author: | iamsteve [ Sat Oct 08, 2011 5:30 pm ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
| Author: | SeekerAfterTruth [ Sun Oct 09, 2011 8:04 pm ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
| Author: | iamsteve [ Mon Oct 10, 2011 6:05 pm ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
| Author: | SeekerAfterTruth [ Tue Oct 11, 2011 3:33 am ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
| Author: | Automan [ Tue Oct 11, 2011 10:02 am ] |
| Post subject: | Re: Monitoring total usage in home with two circuit panels |
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