When someone is a chazzan during his mourning period, the Lubavitch custom is to light five candles.
Does a Chazzan who is not a mourner light any candles? I have seen people turn on an "electric menora" by the Bima. Is this meant to replace the candles (and one who has no menora should light candles) or is this an independent custom?
Moreover, how many candles should this "menorah" have?