bloues

Hello all, Apologies if this is already discussed somewhere else in this forum, it then means my search skills needs to improve 🙂 Looking at various forums and talking to installers there seems to be a difference of opinion on the correct way of installing battery fuse disconnectors when installing two or more batteries. I've shown below two installation options and there may be more options than the ones shown. For the sake of this discussion let's assume the following: Cable, battery disconnect and fuses are correctly sized Batteries have a built-in circuit breakers to provide overcurrent and short-circuit protection Ignore installation costs Which is the correct installation method and according to South African standards that will not get your COC and warranty rejected? Looking forward to a good discussion.

Thank you all for the comments and inputs so far. @p_i The placement of DC & AC SPDs seems to be an interesting topic and further discussions on the correct way is probably a good topic to engage in (see this thread) @Scorp007 my load profile is made up of plugs & swimming pool, oven, geyser and outbuilding. I therefore knows exactly what is causing the peaks and it will surely help to establish a plan to manage those peaks. @Buyeye The 200L 4kW geyser is responsible for almost 50% of my energy consumption. The plan is to install a heat pump to remove the hungry 4kW element's demand on the system and to manage the 150L (2kW) element with either a timer, automation or aux line to the outbuilding. Any other inputs on my PV System design? Thanks PV System.pdf

I would say that the SPD should always be connected on the inverter side to protect the inverter against surges regardless if the breaker is on/off and fuses are in/out

This is how I'm planning to do mine

Hello all, I am ready to pull the trigger on a PV installation but I need guidance, comments and suggestions on my design and the system that I am planning to install. I've spent a fair amount of time reading through the forum to educate myself. There will be things that I've overlooked and this is where I need your suggestions on the selected system and input on my design. Background: Goal is to minimize electricity bill to a minimum; Not to even mention load shedding Combined daily average usage ~33kWh measured since Nov 2022 for house and flat House geyser (200L, 4kw element) - big contributor to overall electricity bill; Planning on installing a heat pump to cut away the hungry 4kW element. Flat geyser (150L, 2kw element) Max power demand for house and flat captured since Nov 2022 - see attached picture Business running from home The plan is to install a Sunsynk 8kW inverter with 16x 550W Canadian Solar panels and 10kWh battery storage - see attached design. I am almost of the view that I will be able to run the house and flat fully on the essential side, maybe with the help of timers etc. The design also makes provision for non-essential and aux load circuits just in case I need to move some circuits to the non-essential / aux load side. I'll appreciate your inputs/guidance and happy to clarify/answer any questions you may have. Thanks PV System.pdf