Excellent suggestion.

Ig, you come across as an enterprising and resourceful individual. I
would suggest focusing your talents on something that is not so
dangerous to...

- your finances
- your power company employees

If this homebrew setup would fail with fatal results for someone, you
will be on the hook litigation wise. There are reasons why sometimes we
spend the money on UL listed products, have a licensed electrician do
the work and have inspections....all to cover us legally.It only takes
one fatal failure to wipe you and your family out financially.

Let know how you end up doing it.

TMT