I posted about this topic a few months back but now we are in the house I am revisiting the topic and keen to get something sorted for energy monitoring.
Our site is fed by 3 phase into our garage. From here it feeds our 3 phase PV system (10.8kw), two of the phase go to consumer units in the house and the other phase is used to power the garage. I would like to monitor PV generation, export and consumption. Also, measure consumption on the 3 consumer units from each phase. From what I have read, I would need 3 x EmonTx with 3 x 100A clip on current sensors for the consumer units but would I also need another 3 for the PV monitoring or could it all be done from the 3 x EmonTx’s? The house and garage are detached and approx. 5 meters apart but the consumer units are at opposite ends of the property so maybe 20 meters total. The house supply is running through a Polyphase Energy Meter 5219 which I believe has an optica/pulse output which could also be used but I am not sure if this is better/what it would replace from the EmonTx + clip on sensor?
Also, I have an ASHP which I would like to monitor. This is run from one of the 3 phase and is in the house so would need to be monitored seperately from the 3 phase supply and PV system. I have spoken to Trystan previously about the through-hole kit for this but I cannot see it on the website and he must be busy as he hasn’t replied to my email re. purchasing the kit. Could anyone steer me in the right direction for this? I believe I would also need a single phase electricity meter on the heat pump supply (although I have a supply to an indoor unit and an outdoor unit seperately for my heat pump so I might need two…??), such as an Elster - A100C, and a heat meter, such as kamstrup 402 with the MBUS module, to be able to monitor this correctly. Although could I just use an EmonTx with two clip on current sensors to measure each supply to the heat pump without the electricity meter being required?
Any advice greatly appreciated!