how many outlets?

I will start my studio contruction on monday... :shock: but don't know how many outlets should i install. My equipment is composed by: - DAW controler - Mac G5 - two genelecs 1029a - keyboard controler - CRT Monitor(will buy 2 tft's ) I will buy 2 biger monitors and 4 preams. Other question is the STAR grounding sistem. if a had a tube with the 3 wires (neutral, hot and ground) and put a branching box (don't know the name in english :oops:) and I send another tube to outlet, and the mainly tube goes to the next wall and put another branching box and send to another outlet, is that STAR grounding sistem?

"branching box"

this is a shabby draw of instalation... is that star grounding?

Here's star grounding. The Hot & Neutral can share on multiple outlets, but there must be a separate ground wire for each outlet and preferrably using Isolated Ground outlets.

Now, if you are using metal conduits and boxes, you must also run a second ground wire to the box. If plastic, no need to.

my idea is to do a recording studio with 6 rehearsal rooms... they where in line: Studio-Rehearsal Room 1 - R R 2 - R R 3 -and so on. If I went into a star grounding for all rooms, each oulet must be earthed independent to the ground. And for the next outlet the same for earth wire, is that correct? and If rooms where at 10 meters - 15 meters - 20 meters - 25 meters, and so on, I need a earth wiring of each distance, but not for the neutral and hot, it's ok? but there wiring were not into the wall , they were over the wall, linke in this picture:

Is not too ugly to put 2 conduits 1 for earth and 1 for neutral and hot?? Or it can be in the same conduit but individually earthed??

Here in the States, codes require you to run the ground w/ hot & neutral in the same conduit. One way to get more outlets, is using a quad box (or a box for 2 sets of outlets (total of 4 plugs)). In this scenario, you can tie the two outlets on the same feed for hot & neutral, but you'll need to pull 2 ground wires (one for each outlet). If you're using metal boxes, you'll need 3 ground wires. One for each outlet and one for the grounding of the box. I'll attach a picture of all the conduits I've run for my control room...

imagine I want to install 3 outlets in the same wall: Should I pull the Hot & Neutral w/ 3 ground wires (one per outlet) in the same counduit?? the conection will be the same that in your picture , won't be? but the hot, neutral and 3 grounds in the same conduit. is that posible??

maybe this draw explains my queston :roll: : Green wire are ground wires, hot and neutral , red and black... bottom squares - outlets, blue squares - counduits.

Should I pull the Hot & Neutral w/ 3 ground wires (one per outlet) in the same counduit??

Yes you can do this. Just make sure you have a large enough conduit. I don't the metric sizes well, but something around the size of 3/4 inch (U.S.).