Hi Everyone

I need a bit of advice from the people that have done inverter installations. I have installed two inverters at work with their own battery banks into a purpose built DB for each. However, I now want to install one at home. As I dont have the budget for a full installation with solar etc, I will install something that perhaps can be added to in the future.

I will only be connecting the inverter output to one circuit (socket outlet at about 300W load - TV and more importantly router) and maybe later to the light circuit which have LED downlighters (15W load). This has come about after a 18.5 hour power failure. During this time there was no cell phone signal for voice or data. The cell towers are dropping out straight after the power goes off which leaves us with no communications in the event of an emergency. With the router online via fibre we at least have whatsapp etc. My intention is to use the socket circuit circuit breaker to feed the inverter(off earth leakage)and place a sub DB next to the main DB which will contain the protection CB to the socket outlets and its own earth leakage. This will therefore operate as an online power supply.

Is this an ideal way to do this. Figure P4 in SANS seems to be what I want to do. This give me the opportunity to use the bypass switch to power the circuit if the battery is too low to switch the inverter on but then I will have to leave the feed circuit on earth leakage.

I am currently looking at the Victron Phoenix Inverter 12/500 230V Sine Wave VE.Direct IEC.

Any comments or suggestions if there is a better way or different equipment.