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dlw wrote: ↑Thu Jul 03, 2025 6:05 am Hi all,

Does anyone have experience with mico/string inverters

I watched an informative YouTube video recently https://youtu.be/XbsHmBbPwRk?si=nUUF7EQ4lXo3wzr4 and I have 4 new 535w panels spare and when I swap my 16 250w for 6 535w they will be spare too.

My inverters current have 2 spare mptt inputs but I can add the micro inverters directly onto them too, I think it would be best of both worlds to add low startup mico inverters which would give me some cloudy day and winter power while my normal panels do the high sun availability.

I've seen some mention on here of the hoymiles inverters and I am thinking of a 1600-4T

Cheers

D

Joeboy wrote: ↑Thu Jul 03, 2025 12:36 pm

dlw wrote: ↑Thu Jul 03, 2025 6:05 am Hi all,

Does anyone have experience with mico/string inverters

I watched an informative YouTube video recently https://youtu.be/XbsHmBbPwRk?si=nUUF7EQ4lXo3wzr4 and I have 4 new 535w panels spare and when I swap my 16 250w for 6 535w they will be spare too.

My inverters current have 2 spare mptt inputs but I can add the micro inverters directly onto them too, I think it would be best of both worlds to add low startup mico inverters which would give me some cloudy day and winter power while my normal panels do the high sun availability.

I've seen some mention on here of the hoymiles inverters and I am thinking of a 1600-4T

Cheers

D

Hi D,

Your Inverter, Is it 2 spare MC4 connections you have? I ask as generally an inverter will have at least 2 sets of mc4's to connect you DC panel strings to? That is then (the DC) power converted to AC power and fed to the home.

The Hoymiles microinverters do exactly the same thing and output AC which can be fed via a 3 pin plug directly into a home electric circuit.

Try and choose as least populated a circuit as you can as the power fed into the circuit you choose compounds along with any existing loads on that circuit.

You would be best advised to tie any micros back directly through their own dedicated circuit to your consumer unit. I have not done this but have an understanding of the loads moving on my home circuits. You may too?

dlw wrote: ↑Thu Jul 03, 2025 7:35 pm

Joeboy wrote: ↑Thu Jul 03, 2025 12:36 pm

dlw wrote: ↑Thu Jul 03, 2025 6:05 am Hi all,

Does anyone have experience with mico/string inverters

I watched an informative YouTube video recently https://youtu.be/XbsHmBbPwRk?si=nUUF7EQ4lXo3wzr4 and I have 4 new 535w panels spare and when I swap my 16 250w for 6 535w they will be spare too.

My inverters current have 2 spare mptt inputs but I can add the micro inverters directly onto them too, I think it would be best of both worlds to add low startup mico inverters which would give me some cloudy day and winter power while my normal panels do the high sun availability.

I've seen some mention on here of the hoymiles inverters and I am thinking of a 1600-4T

Cheers

D

Hi D,

Your Inverter, Is it 2 spare MC4 connections you have? I ask as generally an inverter will have at least 2 sets of mc4's to connect you DC panel strings to? That is then (the DC) power converted to AC power and fed to the home.

The Hoymiles microinverters do exactly the same thing and output AC which can be fed via a 3 pin plug directly into a home electric circuit.

Try and choose as least populated a circuit as you can as the power fed into the circuit you choose compounds along with any existing loads on that circuit.

You would be best advised to tie any micros back directly through their own dedicated circuit to your consumer unit. I have not done this but have an understanding of the loads moving on my home circuits. You may too?

Hi Joeboy,

I have 2 Sunsynk 5kw ecco's, I am using 1 mptt on each at the moment hence the 2 spare, the inverters are paralleled together and near enough act as one. The Sunsynk inverters allow for micro inverters to be added into the gen input as either load coupled or AC coupled and it can let them charge my batteries, so using micro inverters on a few panels with low startup voltage could maximise the energy produced during cloudy days and especially in winter months.

Joeboy wrote: ↑Fri Jul 04, 2025 8:20 am If you are buying in from Germany (Hoymiles) mind and ask the seller shop to set up an installer account for you so you can see its output. Also to ensure they set the micro for a G98 profile.

You can do this yourself as well once you have an installer account.

Welcome to the micro club. I particularly like the idea of relifeing your own panels after a main roof upgrade. That will be quite a bump up in production and as you say Winter generation.

I am looking forward to seeing how far into Winter (excl January) we can be generating meaningful power. At that time of year across those months I count 500W incoming as a win. 1kW has been unicorn territory.

Joeboy wrote: ↑Fri Jul 04, 2025 3:16 pm We have had some manky weather back home today going on the main system generation I'm seeing remotely. Yet the micro's are pushing out a 1/2kW together. In a well trimmed home a 1/2 kW can go a long way?

On import duty. I found that stuff bought ftom Oscar Handel had a good chance of slipping the net. GMBH stuff seemed to be regularly caught. I gave 4 Hoymiles systems across various homes. Also make sure you buy a model wi wifi onboard if monitoring is important to you. Saves going back for a dtu lite later. Defo worth buying and bringing back yourself.

The latest software looks quite good.

Fueltheburn wrote: ↑Fri Jul 04, 2025 3:37 pm The HMS series of Hoymiles seems to have a higher current rating than the HM series. This is more important when using the bigger panels.

You can also over-panel the Hoymiles.

If the unit is a 1600W you can put on 500+W panels on each input.