Another family member had a number of eco features added to the home when built a few years ago. This included a ground source heat pump, hence the three-phase, and solar PV.
I had a look at the setup recently and observed the solar PV is single phase. Furthermore, it is on a phase with one phase of the GSHP, bedroom rings and some lights.
The import meter gives readings for the normal and off peak time periods (they have an Eco20:20 tariff) and total. It did not seem to offer readings for the separate phases. Export is not metered.
My question is how the meter would deal with the PV phase exporting and the other two importing. Let's say, phase 1 is net exporting 2kW, phases 2 and 3 together net importing 3kW. Would it be:
A: Calculation of overall net import across the phases i.e. import of 1kW
B: Calculation of net import across phases importing, disregarding phases exporting i.e. 3kW
I would hope it is A, so that their daytime use of the dishwasher and washing machine are attempting to use their own generated power.
I had a look at the setup recently and observed the solar PV is single phase. Furthermore, it is on a phase with one phase of the GSHP, bedroom rings and some lights.
The import meter gives readings for the normal and off peak time periods (they have an Eco20:20 tariff) and total. It did not seem to offer readings for the separate phases. Export is not metered.
My question is how the meter would deal with the PV phase exporting and the other two importing. Let's say, phase 1 is net exporting 2kW, phases 2 and 3 together net importing 3kW. Would it be:
A: Calculation of overall net import across the phases i.e. import of 1kW
B: Calculation of net import across phases importing, disregarding phases exporting i.e. 3kW
I would hope it is A, so that their daytime use of the dishwasher and washing machine are attempting to use their own generated power.
