In this phase (extensions will happen in the future), I’ll use the UPS feature. The grid will be the prefered power source for the load and battery charge. The battery provides power only when the grid is not available. The grid is generally available 100% of the time during a year but during few month the availability can drop as low as 40% per day. Only critical loads (light, fridge, fans) are backed up (LOAD 1).
The current power consumption from grid is about 3.5KWh per day.
The ambient temperature will range from 11 to 40 degrees Celsius.
Hi small issue Load 2 is on ACOUT 1? or 2
With a 10A power supply and 3.5kWh usage you could use a Multi 3000 GX or 5000 GX and dont need a separate cerbo depending on expected peak load. 3000Va power factor .8 2400W @ 24C or 4kW @ 24C prob. for future exp. (Victron is quoted in VA)
Fuse depends on your expected peak load divided by system voltage (48) add safety margin plus system loss.
AC cabling very much depends on distance and the voltage drop you can live with at the farthest point AC and DC Voltage Drop Calculator AS/NZS 3008 | jCalc.net
e.g. 20Amp 100m 10mm 5% loss - and a pain to install - as you intend to use acout 1 and 2 probably 4 or 6mm (each) at 100 meter is sufficient.
The 3000VA is enough for my current use but in six months more loads will be added which will be too much for the smaller unit. This is why I went for the 5000VA.
I didn’t go for the Multiplus II GX because in the future phase I’ll add an MPPT.
The Inverter will be placed next to the existing main AC panel. Less than 2m wire will be used. 6mm2 is good.
I understand
I try to get away with as few extra wiring / boxes as I can
… GX has one spare ve direct port …
AC 4mm is plenty on 2-3 m 2.5 would be rated at 23A plus reserve performance difference is is <1%
I am AC coupled - multi feed lines with micro inverters - so don’t have to worry about MPPT, DC cabling (except battery connection) etc.
