Precisely the solution in Germany.UL could limit the output, that's I feel the best that can be done.
I think that is incorrect. An inverter with a sufficiently high DC/AC ratio and optimal panel orientation will typically output at its continuous current rating for several hours on a clear sunny day in summer. That's why the NEC requires the continuous 125% factor for output conductors and OCPDs. It may be that a smaller percentage of PIPV systems will actually do that, due to less than optimal panel orientation or exposure, but it's not something that can be counted on from a branch circuit safety point of view.
Sure if the DC/AC ratio and orientation were all optimal then the peak output could be achieved. However, based on my own experience and observations of others (including systems on pvoutput.org) I really see that for most residential systems. I understand ratings compliance can't count on such factors and I was just commenting on the difference between likely reality vs theoretical worst case scenarios.
Did you mean "rarely"?
Oops .. yes ... thanks for catching it
Until Mr Homeowner plugs 4 or 5 units into the same branch circuit.
That’s a fair concern. Loose panels in strong winds could definitely become a hazard if they’re not mounted properly. I think the key difference is proper installation and following building standards. When rooftop systems are installed with the right mounting hardware and wind-load calculations, they’re designed to handle pretty extreme weather. So the standards and approvals might feel like a hassle, but they do help make sure everything stays safely in place.
The problem is that while rooftop PV module mounting systems are thoroughly engineered, tested, installed by contractors, and sometimes inspected, Joe Bob apartment dweller attaching a module to the outside of his 10th floor apartment balcony railing does not have to meet the same standards and these modules will probably become detached in a wind storm.
And of course there is that the wiring of the branch circuit to which the PV is connected has available all the current from the breaker plus the output of the PV.
How many people that buy their equipment from Amazon will ask their landlords to install these receptacles for them?
Lol. That defeats the whole point, which is to avoid hiring a professional.
the ones that expect their insurance companies to pay out a claim on a fire. this seems to be where things are heading. wiring against the code, will soon be the next big excuse for insurance not to pay.
Not quite.Lol. That defeats the whole point, which is to avoid hiring a professional.
It's not a casual installation if an electrician is needed. The basic idea of plug in PV is that someone buys a kit at the local big box store, brings it home and unpacks it, puts the modules in the sun, and plugs it in to an existing outlet.
If they can make up a male to male generator power supply cord up they won't have any problem getting around this.
They can order the cord from Amazon along with the PV equipment!If they can make up a male to male generator power supply cord up they won't have any problem getting around this.
And then backfeed their generator with their plug in solar.
