Solar for Beginners [ask your questions here]

here is a graph of today, mppt2 has 7 panels and mppt1 6 panels. mppt2 never seems to show the benefit of the extra panel.

I have a ground mounted system (16 panels) that has ground anchors similar to your pic. The bars at an angle going through the upright are about 900mm long in mine.

Installed last Oct and we have had two red weather wind events since including the infamous Eowyn storm. No movement whatsoever in mine thankfully.

On the depth query, keep your cables at a depth that they won't be disturbed again. 600 sounds sensible if not covered by Regs

Many thanks for the reply .
Good to know anchors can hold . I see some literature they can hold 98 kms wind speed which is ok . I sent a query to the supplier on max gusts just to be sure . It would be lovely to see 130 gust speed to keep up with our norm winter conditions nowadays .

I can always run a ring beam of shuttered concrete as ballast to the anchors if needed . I’ll wait to see what comes back

For sure shallow trenches carrying low voltage but high currents are dangerous and I’m surprised there isn’t regs on DC . I’m doing the trenching so it will be .600 for sure . It just makes me query everything .

ah yes . I was putting the current at 40 amps roughly . I forgot they are spread across 2 strings . Its understandable as ones person high voltage would be 10kv and another’s would be 400. My background is electronics so it’s all high to me .

Oh no, annoying. Even the lick-test would have been enough on the day. 😄

Probably not, what's the max continuous charge rate of the 5kw Solis?

i suspect its 5kw per hour. so max 15kw in 3 hrs in theory. how do people significantly charge their EV's with such small windows i wonder.

Many users here have changed from Solis to Sunsynk/Deye as the Solis doesn't actually charge at 5kw dc. The claimed rates last for a short period and then derate. I'm not 100% sure if this applies to your model though.

Do you have battery charging graphs you could upload?

I only have a 2 hour window and I can charge my Ev about 20% in that time. My daily use is usually below 20% but if I require more charge, I have a higher night rate outside the 02:00-04:00 window.

What's the cost of the extra 10kWh though? While a net zero bill is a great target it surely depends a lot on the Feed in Tariff rate.

OK that's a good bit cheaper than I expected for 10kWh, have fun.

The payback on my battery was something like 12 to 15 years payback but I got it mainly because I wanted it. I've been able to avoid peak tariff with just a 5 kWh battery.

Or you could get a slightly bigger battery than your daily usage, charge every night (with a 5kW inverter, approx 15kWh which would cost you 83c with Pinergy’s 3 hour window) and force discharge what you don’t use for 25c per kWh.

I have no experience of charging and charge times, one big question I have, is will I be able to charge both batteries in the time window allowed. 3 hrs seems too short to fill 20kwh batteries although only 16kwh usable.

With a 5kWh you've no issue with charging performance. I charge mine at a rate of about 1.2 kW. Only an issue if one has >15kWh battery and need to be at max charge rate.

A car charger will be supplied from your fuse board like any other appliances; oven, Triton shower etc. even the domestic AC supply to your inverter is from fuseboard.