From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Sun, 1 Aug 2021 17:53:17 -0700
Subject: Re: [EE]: Solar Micro Inverters
Thread-Topic: [EE]: Solar Micro Inverters
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Hi Luis,
No external contactor. The microinverters usually all connect in parallel t=
o one AC pair connected to one circuit breaker pair in the main circuit pan=
el. Convenient cabling is usually very easy. Ground bonding for the panels =
is required by code here also. Each inverter takes care of itself. No batte=
ry backup in this grid-tie situation. If the grid goes down there will be n=
o solar power available. Take a look at these views:
https://www.northbaybusinessjournal.com/article/industry-news/after-a-dozen=
-years-enphase-energy-could-be-on-the-brink-of-making-money/
Cheerful regards, Bob


________________________________________
From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of Luis M=
oreira=20
Sent: Sunday, August 1, 2021 8:00 AM
To: Microcontroller discussion list - Public.
Subject: Re: [EE]: Solar Micro Inverters

Hi Issac,
Than you for the calculations, I was overthinking this issue.

As far as I know normal systems, not using microinvertes, take a few
minutes to lock on to the grid, so even less of an issue. Here is where I
have another question:
On a single inverter system using solar panels connected in strings, I can
see where perhaps it will disconnect the all system of the grid and then
connect when thw grid returns, there is one single point of contact, but
how do they do it with the micro inverters? Do they fit some sort of
external contactor?

Best Regards
         Luis




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