Solar options for home in 2022

Forums › Home Workshop DIY › Solar options for home in 2022 - 2026

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#3349815 4-Mar-2025 07:46

eonsim:

Shelly pro em 50, it had two cable clamps and can monitor two circuits and has a 5a relay that can control a contractor. You connect the em relay to the contractors control circuit and then use a clamp to monitor the contractor load cable. then you have a second clamp you can monitor some other load.

https://www.shelly.com/products/shelly-pro-em-50

It's available in nz at a higher price so will have a standards approval for nz. https://www.lykalyte.co.nz/products/shelly-pro-em-50

That looks great thanks @eonsim, and it's available on Smart Home. It seems like its purpose built to run high current devices without burning out because the current doesn't go through it, it just controls it - is that right?

Do you think it would be compatible with this contactor?

Ge0rge

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#3349817 4-Mar-2025 07:48

timmmay:

eonsim which model can do that without burning out? I've seen a few pictures of them failing after switching high loads for a year or two. I'd want the monitoring to not be inline, maybe using a clamp around the cable to monitor.

I feel you might be confusing the difference between direct switching and running a contactor - those you have seen burnt out will have been direct on-line switching and carrying the full current time of the HWC. Using a contactor means the Shelly is carrying minimal current and thus significantly reduced heat.

timmmay

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#3349818 4-Mar-2025 07:51

Ge0rge:

I feel you might be confusing the difference between direct switching and running a contactor - those you have seen burnt out will have been direct on-line switching and carrying the full current time of the HWC. Using a contactor means the Shelly is carrying minimal current and thus significantly reduced heat.

I understand the difference thanks, I'm just confirming my understanding of the product. With the EM 50 I think it's just a controller, the high current I'm switching only runs through the contactor which is purpose built for that job, and the monitoring is done using monitoring clamps rather than inline through the Shelly.

Ge0rge

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#3349820 4-Mar-2025 08:02

The EM50 will drive that contactor without issue.

timmmay

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#3349822 4-Mar-2025 08:18

Thanks all 🙂 Hopefully I can change my order to that one.

I will probably control one contactor and use the other channel for monitoring without control.

eonsim

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#3350031 4-Mar-2025 16:58

timmmay:

eonsim:

Shelly pro em 50, it had two cable clamps and can monitor two circuits and has a 5a relay that can control a contractor. You connect the em relay to the contractors control circuit and then use a clamp to monitor the contractor load cable. then you have a second clamp you can monitor some other load.

https://www.shelly.com/products/shelly-pro-em-50

It's available in nz at a higher price so will have a standards approval for nz. https://www.lykalyte.co.nz/products/shelly-pro-em-50

That looks great thanks @eonsim, and it's available on Smart Home. It seems like its purpose built to run high current devices without burning out because the current doesn't go through it, it just controls it - is that right?

Do you think it would be compatible with this contactor?

That's correct, and it should be.

timmmay

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#3350044 4-Mar-2025 17:33

That's good since I just ordered the EM50, plus a Shelly led strip controller to replace the cheap AliExpress one that never worked properly. Thanks 🙂

MadEngineer

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#3350058 4-Mar-2025 18:19

Sux to be those that buy solar from here

https://tradedepot.co.nz/10kw-1p-solar-inverter-with-wifi/

Only to find their sparky won’t install it or if they do, get its mains tie in rejected

https://www.vector.co.nz/kentico_content/assets/8611192e-96de-4208-bfb5-fe9a0ffee07e/Vector-Approved-Inverters.pdf

https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less

You're not on Atlantis anymore, Duncan Idaho.

timmmay

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#3350129 4-Mar-2025 19:49

MadEngineer:

Sux to be those that buy solar from here

https://tradedepot.co.nz/10kw-1p-solar-inverter-with-wifi/

Only to find their sparky won’t install it or if they do, get its mains tie in rejected

https://www.vector.co.nz/kentico_content/assets/8611192e-96de-4208-bfb5-fe9a0ffee07e/Vector-Approved-Inverters.pdf

https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less

Interesting that Vector don't support the Sigenergy inverter we're getting in Wellington.

fastbike

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#3350153 4-Mar-2025 21:19

MadEngineer:

Sux to be those that buy solar from here

https://tradedepot.co.nz/10kw-1p-solar-inverter-with-wifi/

Only to find their sparky won’t install it or if they do, get its mains tie in rejected

https://www.vector.co.nz/kentico_content/assets/8611192e-96de-4208-bfb5-fe9a0ffee07e/Vector-Approved-Inverters.pdf

https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less

Does it comply with AS/NZS 4777.2 ? If it's not certified then they should not be advertising it as grid compatible. Ask to see if the documentation is available - I did that for the Solis inverter which was not on the Orion Networks list but they added it.

Otautahi Christchurch

EgorNZ

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#3350157 4-Mar-2025 21:39

fastbike:

MadEngineer:

Sux to be those that buy solar from here

https://tradedepot.co.nz/10kw-1p-solar-inverter-with-wifi/

Only to find their sparky won’t install it or if they do, get its mains tie in rejected

https://www.vector.co.nz/kentico_content/assets/8611192e-96de-4208-bfb5-fe9a0ffee07e/Vector-Approved-Inverters.pdf

https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less

Does it comply with AS/NZS 4777.2 ? If it's not certified then they should not be advertising it as grid compatible. Ask to see if the documentation is available - I did that for the Solis inverter which was not on the Orion Networks list but they added it.

The spec sheet linked on TradeDepot shows it's certified to AS/NZS4777, so there shouldn't be any issue. You'd just have to supply some documentation to Vector to show that it meets their requirements.

dantheperson

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#3350209 4-Mar-2025 22:38

MadEngineer:

Sux to be those that buy solar from here

https://tradedepot.co.nz/10kw-1p-solar-inverter-with-wifi/

Only to find their sparky won’t install it or if they do, get its mains tie in rejected

https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less

That's quite an old list you linked to. Doesn't even have any Fronius GEN24s.

The page: https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less links to this list https://www.vector.co.nz/kentico_content/assets/427386c7-cb9a-46d3-bd0f-14fc175cd597/Vector_Approved_Inverters_Oct2024.pdf

which includes a large number of Deye inverters, which looks like the ones Trade Depot are whitelabeling.

MadEngineer

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#3350225 4-Mar-2025 22:41

Spec sheet isn’t a cert. try finding it.

You're not on Atlantis anymore, Duncan Idaho.

dantheperson

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#3350227 4-Mar-2025 22:46

dantheperson:

MadEngineer:

Sux to be those that buy solar from here

https://tradedepot.co.nz/10kw-1p-solar-inverter-with-wifi/

Only to find their sparky won’t install it or if they do, get its mains tie in rejected

https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less

That's quite an old list you linked to. Doesn't even have any Fronius GEN24s.

The page: https://www.vector.co.nz/personal/electricity/distributed-generation/10kw-or-less links to this list https://www.vector.co.nz/kentico_content/assets/427386c7-cb9a-46d3-bd0f-14fc175cd597/Vector_Approved_Inverters_Oct2024.pdf

which includes a large number of Deye inverters, which looks like the ones Trade Depot are whitelabeling.

Oh sorry, i didn't click the tradedepot link, i assumed it was was the Deye one they are selling in the home package deals. Yes, don't see it pre-approved, but as others mentioned if it meets the certification it should be ok, just slightly more paperwork.

Certifications: AS/NZS 4777.2,IEC 62109-1/2,IEC 61727, IEC 62116, NB/T32004

dantheperson

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#3350228 4-Mar-2025 22:48

MadEngineer:

Spec sheet isn’t a cert. try finding it.

Quoting from your vector link

What do I do if the inverter is not approved by Vector?

Please send us a copy of the data sheet or the certificate of suitability for the inverter make and model as proof that it will comply with our standards. Refer to our checklist for all the information Vector requires for a non-approved inverter.

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