Recommend a diesel generator.

 

Testing is expected to be under normal load, once a month, with extra electric heaters as a crude load bank if the building load is unusually low. Monthly test to be cancelled if the set has recently run “in anger”

Whilst times are normal, operating hours will be very limited, but in the event of an emergency then prolonged operation might be required.

Day to day maintenance will be by the owner, a retired railway locomotive workshop fitter.

Spare oil and air filters and fan belts to be stored on site.

Not certain about battery checks, beyond precautionary replacement every 4? years. would consider duplicating starter battery. If all else fails, jump leads from a vehicle battery are possible. Is the starter battery likely to be 12 volts?

Public supply is three phase at 100 amps. No three phase loads. It is proposed to generator back only one phase, having ensured that all smaller but high priority loads are connected to that phase.

L1 cooker, electric shower, outbuilding power.

L2 second cooker, two more showers, 

L3, generator back up, most lighting and small power, central heating, immersion heaters. Some form of automatic load control is proposed for the immersion heater, such that these will only run when the generator is lightly loaded.

Data logger shows load on L3 averages about 30 to 50 amps under normal conditions, but has reached 75 amps. Hence desirability of load control for immersion heaters. 

 

Testing is expected to be under normal load, once a month, with extra electric heaters as a crude load bank if the building load is unusually low. Monthly test to be cancelled if the set has recently run “in anger”

Whilst times are normal, operating hours will be very limited, but in the event of an emergency then prolonged operation might be required.

Day to day maintenance will be by the owner, a retired railway locomotive workshop fitter.

Spare oil and air filters and fan belts to be stored on site.

Not certain about battery checks, beyond precautionary replacement every 4? years. would consider duplicating starter battery. If all else fails, jump leads from a vehicle battery are possible. Is the starter battery likely to be 12 volts?

Public supply is three phase at 100 amps. No three phase loads. It is proposed to generator back only one phase, having ensured that all smaller but high priority loads are connected to that phase.

L1 cooker, electric shower, outbuilding power.

L2 second cooker, two more showers, 

L3, generator back up, most lighting and small power, central heating, immersion heaters. Some form of automatic load control is proposed for the immersion heater, such that these will only run when the generator is lightly loaded.

Data logger shows load on L3 averages about 30 to 50 amps under normal conditions, but has reached 75 amps. Hence desirability of load control for immersion heaters.