Reply To: using hot water from tank on shabbos

HaLeivi: if you can, get hold of the teshuvo. R”dovid zz’l

deals withb all the details and minutiae of this matter and covers a multitude of rishonim and acharonim.

Little Froggie : Thank you . At times, I fight an uphill battle in the coffee room, so it is comforting to know that I am not totally stupid.