I've been the lead consultant on quite a few fully custom private residential theaters. Along with knowing the equipment, which you've provided, the equipment locations are important in planning the electrical layout.
The general starting requirements are that all AC power circuits are on the same phase and leg, and therefore have the same ground potential. Other items in the room that require power, for example lighting, convenience outlets for device charging, vacuum etc., should never share circuits (breakers) with the A/V gear. Your electrician will understand what this means at the panel side.
Is ALL the head-end equipment in one location?
If not, where is the secondary location for principal system components? (Example: in my room, the head-end gear is at the rear of the room, but all amplifiers and the BAX1 crossover are at the screen / speaker end of the room.)
What are the secondary equipment locations, if any? I'm thinking of items such as powered subwoofers that are tied to the head end by signal connections, but are in locations other than where the head-end equipment rack is located.
For the above items, the electrician will need to know what's required and where, that will comprise the entire equipment power needs. He / she will also need to know the maximum power draws for those outlets, and he / she can then determine the best use of panel breaker space, including 20amp vs. 15amp breakers. 240V is generally not useful for North American installations, but the question of 20 amp or not is.
Using my room as an example, the electrician ran a 20 amp feed to the screen / speakers / amps end of the room, separate from the equipment power to the rear. This allowed separate 120V outlets on either side (I have the amps sitting in the left rear and right rear corners, respectively, so that speaker cables can be short).
Hope this helps.
Brian
Matrix Audio
Featuring the Bryston T10 Active System
