Since we’re talking about power distribution in homes, the National Electric Code and local zoning apply. That means low voltage for the purpose of the article will be limited to 0-49v. All solar panels for homes that I’m aware of are under 49v per panel so fair enough for the article.
The panels on my house are 44V each but are connected with 11 in series. That means you can expect to see 484V in an open circuit situation with full sunlight.
