8Coops8

I already have EWI; all heat saving measures possible have already been carried out to allow for low temperature heating. Its just a very big house ~440m2. Its a 250yr old house that i fully refurbed with energy consumption in mind but money stress meant i left the original 50-70kWh oil boiler in place until now.

DNO say 2 phases available inside my property and i can see 4 wires combine at pole and go underground and into my house, but currently only 1L and 1N is connected to the fuses and meter. So assuming 2L and 2N. I wonder if historically there were 2 meters fed from the 2 single phases.

Yes kWh and annual consumption

Heating consumption is ~38000KW; measured by oil consumption so probably 33000KW if 100% efficiency. Max heat loss at -5C outside and 21C inside is ~15KW; as measured by timing oil boiler firing over 12hr period at consistent 0C outside and then extrapolating to -6C. i live 2 miles from the sea and we can get severe fog almost daily in some years and was worried about ASHP having freezing problems. GSHP was to use boreholes and don't like the cost but figured it would be more reliable.

The proposed installer of the heat pump had a look at my current appliances and thought it a risk without approval from the power grid; mainly due to peak amps on start up ~52A, they confirmed i required additional load. I have all electrical cooking appliances; heat recovery ventilation and a hot tub already using up the supply.

I think the 2nd single phase powered an outdoor swimming pool until it was removed about 40 years ago. The 3 fuses were installed about 7 years ago when i relocated the incoming power supply. Would like to put both single phases into a 3 phase meter ideally to save the additional standing charge, but can you do this..?

Definitely never had 3 phases.

Looking for some advice. I currently have single phase electricity supplying my refurbished home but am now looking to install a GSHP to replace my old oil boiler and also a car charging point. My electricity supply is already pretty much maxed out and I require more power. It appears that I already have 2 single phase cables entering my home but only 1 live cable enters 1 of 3 100Amp fuses and then goes into my electricity meter, so presume 2nd single phase supply was never connected. The electricity pole supplying my house has 2 pairs of black cables (4 cables total). I contacted Northern power and received the following "A load of 35.00 kVA may be connected providing the load is split and balanced over the two phases available and your connected load does not exceed 80A per phase at any time. The connection is a low voltage 230/460V alternating current 50Hz supply. The present earthing arrangements will be maintained. If your metering requires upgrading or you require additional meters fitting, your supplier is responsible for carrying out this work." I then contacted EON and they don't know don't seen to understand my meter requirement and keep asking if I want a single phase meter or a 3 phase meter as there is no such thing as a 2 phase meter...? Anyone any idea what I would require? Thanks