This gets a bit complicated so bear with me. Basically i have 2 rural tt supplies. One is to a large farm shed with PV solar 3.6 kw on the roof and is not used much.
the other is a large house and pub combined which has a shared supply transformer with a nearby bungalow. I m not concerned about the bungalow.The pub /house also has geothermal heating at 10kw i think. I have not done any work to this previously but do install PV Solar so know my way about it.At present the pub s PV goes against the geothermal when it's producing, lay mans terms.
Farm shed is mainly exporting as rarely used so ower has run a 16 mm split concentric cable between pub and farm shed and wanted to power the geothermal in said pub from farm shed supply thus using this generated power leaving the pub s solar to run the fridge's etc. when producing.
This would work in theory but i have no intention of hooking it up as i have many reservations. This Solar installer had recorded the pub s earth spike as 30 ohms when i measured it i got 1622 ohms. I had to install new spike which i managed to get 155 ohms. Unbelievable really, plus the farm building spike was 88 and was recorded as 27 ohms plus had a 30 ma trip completely stuck , wouldn't even push button test . Both jobs with major fire hazards.
Back to main topic then, i don t know enough about the distribution side but was worried about there being a second supply into the pub as a fire hazard. Was sure there would problems with the earthing as the various pumps etc. at the geothermal would link the 2 spikes of the supplies together or maybe raise the potential somewhere, urinal is all metal. Ouch. This is more for curiosity than anything.Sorry if it s hard to follow
the other is a large house and pub combined which has a shared supply transformer with a nearby bungalow. I m not concerned about the bungalow.The pub /house also has geothermal heating at 10kw i think. I have not done any work to this previously but do install PV Solar so know my way about it.At present the pub s PV goes against the geothermal when it's producing, lay mans terms.
Farm shed is mainly exporting as rarely used so ower has run a 16 mm split concentric cable between pub and farm shed and wanted to power the geothermal in said pub from farm shed supply thus using this generated power leaving the pub s solar to run the fridge's etc. when producing.
This would work in theory but i have no intention of hooking it up as i have many reservations. This Solar installer had recorded the pub s earth spike as 30 ohms when i measured it i got 1622 ohms. I had to install new spike which i managed to get 155 ohms. Unbelievable really, plus the farm building spike was 88 and was recorded as 27 ohms plus had a 30 ma trip completely stuck , wouldn't even push button test . Both jobs with major fire hazards.
Back to main topic then, i don t know enough about the distribution side but was worried about there being a second supply into the pub as a fire hazard. Was sure there would problems with the earthing as the various pumps etc. at the geothermal would link the 2 spikes of the supplies together or maybe raise the potential somewhere, urinal is all metal. Ouch. This is more for curiosity than anything.Sorry if it s hard to follow
