Hey folks... I am looking at diy'ing residential solar system and trying to wrap my brain around code. It's been a bit of a roller coaster as I got denied my grid tied application with Ontario hydro so I switched gears to building a smaller system. After a few phone calls though it seems like hydro might actually give me an approval after all and I am back to designing a larger system again....
So today's question is around rapid Shut down Requirements here in Ontario Canada'land. I have attached a ESA bulletin I found on the topic and I am trying to dissect it.
If I read it correctly rapid Shut down should only be required if the inverter is setup to run in Islanding mode. So a basic UL1741 listed string inverter would not require a seperate means of rapid Shutdown.
Now if I goto a hybrid inverter that supports a critical load sub panel does this now mean I need a means of external rapid Shutdown? If so what does this look like for say a solark style inverter?
My plan is to stage the my install.. starting with about 5-6kW of PV setup to hybrid inverter. No critical loads panel, just a breaker in my main panel. Once I have that working I will then move to a critical loads panel and likely at the same time add a small amount of battery. Then likely add another 5-6kW of panels...
Your thoughts and input are greatly appreciated!
Mike
So today's question is around rapid Shut down Requirements here in Ontario Canada'land. I have attached a ESA bulletin I found on the topic and I am trying to dissect it.
If I read it correctly rapid Shut down should only be required if the inverter is setup to run in Islanding mode. So a basic UL1741 listed string inverter would not require a seperate means of rapid Shutdown.
Now if I goto a hybrid inverter that supports a critical load sub panel does this now mean I need a means of external rapid Shutdown? If so what does this look like for say a solark style inverter?
My plan is to stage the my install.. starting with about 5-6kW of PV setup to hybrid inverter. No critical loads panel, just a breaker in my main panel. Once I have that working I will then move to a critical loads panel and likely at the same time add a small amount of battery. Then likely add another 5-6kW of panels...
Your thoughts and input are greatly appreciated!
Mike