Generator or Inverter for residential use?

[Sinbad]

2 x 2 into 1 combiners up. View attachment 883908

you are of course checking that you're not exceeding the current rating of the wires and connectors from your combiners into the mppt?

My parallel strings were connected with these:


No big junction boxes or anything

 

[AchmatK]

you are of course checking that you're not exceeding the current rating of the wires and connectors from your combiners into the mppt?

My parallel strings were connected with these:
View attachment 883920

No big junction boxes or anything

6mm² wiring.

 

[wingnut771]

you are of course checking that you're not exceeding the current rating of the wires and connectors from your combiners into the mppt?

My parallel strings were connected with these:
View attachment 883920

No big junction boxes or anything

what's the current rating on that?

 

[AchmatK]

Lay your own conduit?

Nope. Last part of the electrician's work was to put up the combiner boxes and connect them to the inverter.

 

[Sinbad]

what's the current rating on that?

MC4 connectors, 20 amps I believe?

 

[AchmatK]

Was also considering the Y connectors but this is CoCT and I needed the surge arrestors and fuses so just decided to go with the combiner boxes.

 

[Sinbad]

Was also considering the Y connectors but this is CoCT and I needed the surge arrestors and fuses so just decided to go with the combiner boxes.

I have those as well The Ys are on the roof, 2 wires going down into the garage into the surge arrestors and fuses. But I only have 3.3kWp @ 250Vmax so no issues with that capacity

 

[cfvh600]

MC4 connectors, 20 amps I believe?

30A according to the Victron Smartsolar MPPT Datasheets

Edit:

Also see references to 20A as per @Sinbad.

 

[wingnut771]

30A according to the Victron Smartsolar MPPT Datasheets

and the 3 into 1 and 4 into 1?

 

[AchmatK]

Couldn't put up the last of the panels yet.

Just need to put up the last eight panels and run the cables from the 4 strings to the combiner box.

 

[wingnut771]

Couldn't put up the last of the panels yet.

Just need to put up the last eight panels and run the cables from the 4 strings to the combiner box. View attachment 884020 View attachment 884022

would have liked to see the internal connections.

 

[AchmatK]

would have liked to see the internal connections.

I think I posted a pic of the internals. There's only space for a + & - cable from the combiner box to inverter. It comes with rest of the internals already connected so I just need to clip on the MC4 connectors to the bottom left.

 

[TheChamp]

and the 3 into 1 and 4 into 1?

Same or up to a maximum of 40A.

 

[AchmatK]

Really impressed with this inverter.

Now that the CT sensor is connected, the inverter can pick up the power from the grid and can determine the load before the inverter.

I've set it now to limit the output to the house and not just to load and aux output of the inverter.

This pic shows the power the battery is providing to the inverter and how the inverter is distributing the power to the load and house and nothing back to the grid.

Arrows show the direction of the electricity.

It's still combining the aux and load output but will get this resolved in due course.

Technically there is now 3 outputs active in the inverter.

The grid input is now being used as an output to supply loads before the inverter like my outbuilding with pool pumps and well pumps.

The second output is the normal essential load output.

And the third is the aux output for non essential loads like my geyser and aircons.

 

[Saba'a]

Really impressed with this inverter.

Now that the CT sensor is connected, the inverter can pick up the power from the grid and can determine the load before the inverter.

I've set it now to limit the output to the house and not just to load and aux output of the inverter.

This pic shows the power the battery is providing to the inverter and how the inverter is distributing the power to the load and house and nothing back to the grid.

Arrows show the direction of the electricity.

It's still combining the aux and load output but will get this resolved in due course.

Technically there is now 3 outputs active in the inverter.

The grid input is now being used as an output to supply loads before the inverter like my outbuilding with pool pumps and well pumps.

The second output is the normal essential load output.

And the third is the aux output for non essential loads like my geyser and aircons. View attachment 884100

Pity the android app not same, since a generic app and not sunsynk specific?

 

[Saba'a]

That's great! I hope it's all sorted now. Keep us updated.

Any restarting issues? Or resolved?

 

[AchmatK]

Any restarting issues? Or resolved?

Last restart was at 15:00 so hopefully it's also sorted.

 

[AchmatK]

Grid status is static.

 

[Saba'a]

Really impressed with this inverter.

Now that the CT sensor is connected, the inverter can pick up the power from the grid and can determine the load before the inverter.

I've set it now to limit the output to the house and not just to load and aux output of the inverter.

This pic shows the power the battery is providing to the inverter and how the inverter is distributing the power to the load and house and nothing back to the grid.

Arrows show the direction of the electricity.

It's still combining the aux and load output but will get this resolved in due course.

Technically there is now 3 outputs active in the inverter.

The grid input is now being used as an output to supply loads before the inverter like my outbuilding with pool pumps and well pumps.

The second output is the normal essential load output.

And the third is the aux output for non essential loads like my geyser and aircons. View attachment 884100

CT same as the earthbond? As per Sunsynk forum post below?


Connecting a CT Coil ( Update )

Jun 12

Please find an updated drawing up connecting the CT coil or making Earth bond connection

 

[AchmatK]

CT same as the earthbond? As per Sunsynk forum post below?


Connecting a CT Coil ( Update )

Jun 12

Please find an updated drawing up connecting the CT coil or making Earth bond connection

Not the same. The CT coil is just a sensor that goes around the main feed from the grid. The sensor picks up the current flowing through the wire. Similar to the sensor on the efergy but not wireless.