Danger

100% I basically need another MPPT / inverter for another set of solar panels pointing in a different direction. Looks easy to add an inverter to the gen port, just not sure if it needs to be a 3p or if I can use a 1p inverter.

I've got a Deye 12kw 3p hybrid inverter at home. I might need a few exra mppt's to manage more strings. One of the simplier ways is to connect a grid tie inverter to the gen port and let te dye manage it. Do I need to connect a 3p grid tie inverter, or would it potentially be possible to use a 1p gried tie inverter?

Sunsynk actually specifies their single phase capacity as 50% of their rated max capacity. Quoting on one of the local websites, it can do a max of 6kw per unbalanced phase.

Okay. I was looking at the Sofar 15kw es inverter. The spec says it can be connected to an unbalanced load. But not sure if it can work as I explained. I spoke to a local agent and they said it can't give you backup load of more than 1/3 if it's capacity per phase.

If a 3 phase hybrid inverter is rated at 10kw, my understanding is that it can support a combined balanced backup load of 10kw on all the phases (3.3kw per phase). If the load is unbalanced (say I only use one of the 3 phases), can I run a backup load of 10kw on it? Or is it still l limited to 3.3kw on that phase?

I hear you on the multi valve, but it was dripping most of the day. So not 100% which one solved it more, I'm just happy. Just a pity I didn't pick this up before installed my pv solar system. Could have designed at least 6kwh/day smaller....

Just to close this one off. I figured out my multi valve on the geyser is only 400kpa while the rest of the system is 600kpa. So part of what happened was that when the geysers got hot, they pushed water back out the multi valve on the mains (not to be confused by the TP valve...). While the guys was up there, I also got them to replace the non return valve leading to the solar tubes with a spring loaded version instead of a flap version. Between those two, the problem is now solved. Geyser works like a beast! Cut my daily consumption by 5 to 7kwhpd. The geyser is now actually overheating. New day, new problem.

I think that is exactly what is happening. Now to solve it...

Makes sense! So basically put a kink in the pipes to prevent the warm water rising. Let me think it through, worried a vacuum might still push it through. I've heard the non returns valves don't last long and has to be replaced every few years.

Tx. Our almost 20c drop is without anyone using hot water the evening. But thanks for the tip, will have a look.

My solar geyser heats up to +65c during the day and then drops to 45c by the morning. I suspect the geyser is just siphoning water through all night long cooling it off. How do I prevent this? I've got 24 vacuum tubes accross 2x 200l in serie geysers. The "front" geyser is on geyser wise and the system takes cold water from the "back" geyser to feed warm water into the front geyser. Ive got geyser blankets and those pipe coverings on everywhere I could fit it. To make double sure it's not a temperature difference between the two geysers, I've electronically heated the rear one as well to 60c (normal element and thermostat)