with these questions (1, 2) as partial background I still do not understand the permission to light candles on the second day of Yom Tov if that lighting is not for ochel nefesh.
If I can transfer a fire, can I light a new fire on yom tov? What's the difference between lighting a new fire and transferring a fire? Aren't they part of the same melacha?? The melacha is to create ...
I heard once that the poskim permit "gram mav'ir" on yom tov l'tzrich gadol. For example if someone wants to use a platta (hot plate) that they forgot to plug in they may plug it in with a Shabbos ...