I have attached photo of electrical setup..it has been like this with no problems for many many years. The (black) feed coming in to the pump house to the LH switch which can be seen is direct from the meter..a separate meter to the main house. The meter was renewed 2 years ago.
The pump/pressure tank is located in a concrete block pump house. When replacing the jet pump recently I noticed the RH rectangular "switch" is quite rusty on the back plate and I think I should replace it. My problem is that it is so old I cannot find out exactly what it is although it was made by MEM. I assume it an old isolator switch?
The white 3-core cable goes to a pressure switch which switches the pump on and off according to the pressure in the tank. The pump is 0.75 kw/1HP and so say draws 5.5 amps.
It all works fine and we have never had any problem with the electrics to the pump house but I would like to replace the RH switch in the photo given its condition and also install a separate socket fed from the LH switch which can be used for a thermostat controlled tube heater and/or a light or power tool if needs be. I need to be able to have that new socket "live" when the second/RH "isolator" switch is off as I want to be able to switch off the (drained) pump if I am away for any long period in Winter whilst still leaving the 60w greenhouse-heater on.
The only other thing I would add is that though the pump etc is enclosed and weather proof it can get quite damp in there with condensation on the metal parts/tank/pump given the (low) temperature of the ground water and low cloud in Winter (1200 ft up)
I would be grateful for any suggestions
/schematic diagrams/suitable parts. Thank you for reading.
The pump/pressure tank is located in a concrete block pump house. When replacing the jet pump recently I noticed the RH rectangular "switch" is quite rusty on the back plate and I think I should replace it. My problem is that it is so old I cannot find out exactly what it is although it was made by MEM. I assume it an old isolator switch?
The white 3-core cable goes to a pressure switch which switches the pump on and off according to the pressure in the tank. The pump is 0.75 kw/1HP and so say draws 5.5 amps.
It all works fine and we have never had any problem with the electrics to the pump house but I would like to replace the RH switch in the photo given its condition and also install a separate socket fed from the LH switch which can be used for a thermostat controlled tube heater and/or a light or power tool if needs be. I need to be able to have that new socket "live" when the second/RH "isolator" switch is off as I want to be able to switch off the (drained) pump if I am away for any long period in Winter whilst still leaving the 60w greenhouse-heater on.
The only other thing I would add is that though the pump etc is enclosed and weather proof it can get quite damp in there with condensation on the metal parts/tank/pump given the (low) temperature of the ground water and low cloud in Winter (1200 ft up)
I would be grateful for any suggestions