Votes are +10/-3, there are three good answers with summed votes +18/-0, and the answers.
The stated close reason is:
Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design.
I'm not sure how this applies because design of a power distribution includes the choice of mains frequency (in this case as low as 30 Hz) and this is certainly a circuit, and questions about mains power distribution are demonstrably on-topic (I can find many that are well-received and answered).
The only negative comment I've found is that it lacks
enough effort or EE aptitude
but I don't know if that's the reason this question was closed or not.
So my questions are only:
- Was this question likely closed for the stated close reason, or for a different reason that's not stated?
- What edits can be done to address either the stated or the likely close reason that wouldn't conflict with the existing answers?
One edit I can think of off the top of my head is moving the "why?" to the beginning of the title.