Some time ago I posted about the restoration of a very large crystal chandelier. Some time after that, I also visited the site and now the restoration of the chandelier is being arranged. Also, it is time for an overhaul of the room's lighting system, which contains ten chandeliers and four large banquet lamps. To aid in my question, I have made a picture and with a legend and will describe the desired control methods:
A - Crystal chandelier, 105 lights at 25 W each (2625 W, zones of 48, 48 & 9 or 64, 32 & 9)
B - Four crystal chandeliers, each with 18 lights at 25 W each (4*450 W = 1800 W total)
C - Four crystal chandeliers, each with 12 lights at 25 W each (4*300 W = 1200 W total)
D - Four banquet lamps with crystals, each with 15 lights at 25 W each (4*375 W = 1500 W total)
E - Alabaster dome chandelier, unknown number of lights (four possibly, I do not know)
The grand total is 285+ light bulbs for a total of 7,125+ W, or about 60 amps. This is assuming all the bulbs are 25 W. In all likelihood fixtures like the banquet lamps are going to have 15 W bulbs and the largest chandelier may have some 15 W bulbs, but it might be best to calculate assuming all is 25 watts.
Since most of the wiring is accessible and there is a subpanel with sufficient capacity dedicated to the lighting of this hall, I am trying to figure out a way to best divide this lighting across a number of circuits and dimmer switches.
Chandelier 'A' is going to be on three dimmers as described, on two circuits. If it is divided 48, 48 and 9, it will fit on two 15 amp circuits with 1200 W on one and 1425 W on the other. If it is divided 64, 32 and 9, it will fit on a 20A circuit and a 15A circuit, but this will surely be two 20s tied at the handle.
Inner chandeliers 'B' total 1800 W (15A) and would fit on a 20A circuit. I don't know though if it is wise to put 1800W so near to the threshold of a 2000W dimmer though. In any other case, they can be divided into two pairs, east and west.
Outer chandeliers 'C' total 1200 W (10A) and would fit on a 15A circuit. They could also be divided into pairs though, with the east lamps and outer chandeliers (totalling 1350 W or 11.25A) on one 15A circuit and the west lamps and outer chandeliers on another.
Banquet lamps 'D' total 1500 W (12.5A) and surpass 80% of a 15A circuit. They would have to go on a 20A circuit or be divided into pairs with the chandeliers 'C'.
Chandelier 'E', which hangs over a dais at the threshold of a display room, can be connected to whichever circuit has enough capacity or it can tie into another room.
Ideally, all of these fixtures would be accommodated by seven dimmer switches (three for A and one each for groups B, C, D and E) and five circuits. Or they would have to be broken up into pairs, but with no dimmer controlling more than one "letter". Manual dimmers are being sought, not a theatre style system, although there is room and accessibility to install a dimmer rack in the future.
As it stands, there are six or more toggle switches, three of which turn on an uneven mixture of lights in the middle chandelier, and the other three or more which turn on a mixture of chandeliers and lamps.
Any ideas or thoughts?