GETELECTRIC:
What brand is the Modular Furniture? (Like Steelcase or Herman Miller).
The installers _SHOULD_ have supplied + left the Power Connection Whips when they installed the Furniture.
* If they installed it and did not leave the Whips, give them a nice and quick call, requesting that they supply these items. If they resist, begin the nasty gram assult (include the GC + the architect in the gram-o-spam).
* If the Furniture is not installed (and you are just bidding the job), contact the Vendor whom is supplying + installing the Furniture, and ask them for Wiring Configurations.
Additionally, the model number / type may be referenced via the manufacturer's website.
There are so many different configurations available, and some Whips may have 2 or even 3 different connection options available.
One very important thing to keep in mind is the use of the Receptacles on the Wireway.
There will be at least 4 different connection schemes for Receptacles. Suggest they stay away from any I.G. Circuitry!!!
As far as the actual connections of the Factory Whips, this is a typical scenario:
1: The Whips are commonly a 3 foot pre-made segment of 1/2" LFMC (Sealtite), with a modular connector on one end, and 12" of "free conductors" on the other.
2: The "free end" should have a 90ยบ LFMC connector on it (if it doesn't, you will need one).
3: Set a _DEEP_ 4S box - or better yet, a deep 5S box, with a 2 gang ring, at the P.O.C. (Point Of Connection) location.
4: Drill a 1/2" K.O. in the center of a 2 gang stainless steel blank cover plate, and connect it to the sealtite fitting at the "free end".
5: Make up the splices, and cover the box with the 2 gang blank.
Techniques are similar for the Comm/Data P.O.C. location, only there are no factory Whips for Comm/Data.
Dress the cables as you would at an MDF / IDF.
You need to know the Wiring system type before anything else.
Number of wires + configuration.
This will be reflected to your Branch Circuitry.
An example of Three (3) different wiring schemes = configurations:
A: 5 Wire System:
3 Phase 4 Wire (Lines "A", "B" and "C" + Grounded neutral Conductor), plus equipment grounding conductor.
B: 8 Wire System:
3 Phase 4 Wire (Lines "A", "B" and "C" + Grounded neutral Conductor), plus equipment grounding conductor.
Plus an Isolated Grounding Circuit (1 "Hot", 1 "Neutral" and one Isolated Grounding Conductor)
C: 12 Wire System:
3 - 2 wire IG circuits (Hot, Neutral + Isolated Ground)
1 - 2 wire circuit + equipment grounding conductor.
Each of these may also be connected to 1 phase 3 wire systems if needed.
As you can see, there are many options available.
Good luck.
Scott
