Hi,
So with my current setup (8kW single phase) I have a conduit from the main switchboard (connecting the whole house, also where the main feed utility comes in) to where the inverter resides.
I am currently running 3x 4mm2 wires for 2x L (Grid and Load) and 1xN and am upgrading to 6mm2 after discovering an issue with one of the wires (due to error by the electrician that pulled the wires).
I am thinking of using just 2x 6mm2 wires connecting to the Grid socket at the inverter side and combining that with the CT cable at the switchboard side where the wire is hooked to both utility and the home switches.
For reference, the utility supply is sporadic, I will have a trip switch disabling it at the main feed point. Will only rely on this to recharge the battery if it's been cloudy for several days which thankfully is about 50 days a year where I am.
My questions:
1- What devices should I have on the switchboard to ensure that the inverter/wiring/home appliances are protected?
2- In this arrangement, if utility is on, the house will be powered by the utility if I'm not mistaken. So if the utility goes out, how instantaneous will the inverter switch over and supply power? I am concerned that such interruptions could damage any of my appliances.
If using just the 2 wires is troublesome, I will revert to the current 3x wire setup but thought of saving the hassle.
Thanks
So with my current setup (8kW single phase) I have a conduit from the main switchboard (connecting the whole house, also where the main feed utility comes in) to where the inverter resides.
I am currently running 3x 4mm2 wires for 2x L (Grid and Load) and 1xN and am upgrading to 6mm2 after discovering an issue with one of the wires (due to error by the electrician that pulled the wires).
I am thinking of using just 2x 6mm2 wires connecting to the Grid socket at the inverter side and combining that with the CT cable at the switchboard side where the wire is hooked to both utility and the home switches.
For reference, the utility supply is sporadic, I will have a trip switch disabling it at the main feed point. Will only rely on this to recharge the battery if it's been cloudy for several days which thankfully is about 50 days a year where I am.
My questions:
1- What devices should I have on the switchboard to ensure that the inverter/wiring/home appliances are protected?
2- In this arrangement, if utility is on, the house will be powered by the utility if I'm not mistaken. So if the utility goes out, how instantaneous will the inverter switch over and supply power? I am concerned that such interruptions could damage any of my appliances.
If using just the 2 wires is troublesome, I will revert to the current 3x wire setup but thought of saving the hassle.
Thanks