2. Question: Why on Chanukah is it beautifying the mitzvah by using bigger wax candles but it’s not beautifying the mitzvah when adding more oil into the cup to burn for more than the half hour allotted time for the mitzvah?
A. The Mishna Berura (675:2:6) says there is no mitzvah to put in enough oil to last more than a half an hour but with wax candles their is a beautification of the mitzvah when having longer candles but they shouldn’t be too big.
Answer: The Magen Avraham (there si’if katan 3) says there is an intrinsic beauty to longer candles that makes the mitzvah look nicer but oil is oil no matter how much was put in and once the half an hour is gone one can technically use that oil because it’s not being used for a mitzvah anymore so there is no intrinsic value to more oil. [/exapnd]