The use of twining multiple wicks can represent many things. Maybe it's to separate it from a regular candle, because it can be re-used, but should be used only for the havdalah. Some families may braid together enough candles to represent all the children. Others always use two or three, according to their own family customs.
The candle itself represents an especially large and bright light. Lighting it signifies the end of the Sabbath, when we are not allowed to light or use fire/electricity at all. And dousing it in the wine signifies the beginning of the new week.
there are 8 lit
Candles are lit for all 8 nights of Hanukkah.
Each night of the 8 nights of Hanukkah, the candles are lit. 2 candles are lit on the first night, and then each night an additinal candle is lit until all 9 candles are lit on the 8th night.
8
8 days
8
Eight days
The candles are put into the Hanukkiah (Hanukkah-menorah) starting on the first evening) of Hanukkah. The candles are lit in the early evening after sunset or later.
They are lit every night for all 8 nights of Hanukkah.
Hanukkah (also spelled Chanukah)
Yes; and the Hanukkah candles are lit earlier than usual for that reason.
Any candles that are big enough to burn for one-half hour or more.