The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
breaker meltdown
by sparky
Today at 07:30 PM
230 or 345 kV transmission lines?
by Vlado
09/24/16 09:33 AM
Electrical mast flashing product
by ThomasWinfrey
09/22/16 12:14 AM
What estimating software do you recommend?
by sparky
09/21/16 07:20 PM
"Dry Run" Inspection goes awry
by HotLine1
09/20/16 07:39 PM
New in the Gallery:
12.5A through 0.75mm▓ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
HotLine1 14
sparky 10
sparky66wv 8
gfretwell 8
Vlado 6
Who's Online
0 registered (), 259 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#173651 - 01/15/08 11:13 AM Office furniture connection
GETELECTRIC Offline
Member

Registered: 10/22/03
Posts: 178
Loc: toronto canada
Just curious to know how you would wire a furniture connection with a whip.Do the whips normally come with the furniture and how do you terminate them?

Top
2014 / 2011 NEC & Related Books and Study Guides
#173653 - 01/15/08 12:46 PM Re: Office furniture connection [Re: GETELECTRIC]
jay8 Offline
Member

Registered: 07/28/05
Posts: 183
Loc: Vancouver, BC
What I have seen is the whip is supplied as part of the modular furniture. It is a piece of flex with conductors in it,and you terminate it to a junction box. It is helpful to have some shop drawings so you know how many circuits the furniture is wired with. And dont forget the voice/data, this you will have to run to the workstation through wireway that is usually part of the furniture. That should also be on the shop drawings.

Top
#173657 - 01/15/08 02:29 PM Re: Office furniture connection [Re: GETELECTRIC]
ggardiner Offline
Member

Registered: 10/22/01
Posts: 81
Loc: Calgary, Alberta Canada
You will find various styles of whips used by different manufacturers. They can be 8 wire using a shared neutral or an 8 wire using an indepentant nuetral on top of that there is a 10 wire system and one system that will use 14 wires. It is best to find out right from the start which system you will be expected to connect to. Further to this there are also furniture available using a quick connect method where the just plug into a jumper which in turn connects to a distribution box. If you know who manufacturers it then I may be able to tell you how it will arrive.

Top
#173716 - 01/16/08 08:29 PM Re: Office furniture connection [Re: ggardiner]
Scott35 Offline

Broom Pusher and
Member

Registered: 10/19/00
Posts: 2724
Loc: Anaheim, CA. USA
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 90┬║ 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
_________________________
Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!

Top
#173729 - 01/17/08 07:03 AM Re: Office furniture connection [Re: GETELECTRIC]
GETELECTRIC Offline
Member

Registered: 10/22/03
Posts: 178
Loc: toronto canada
Thx the system is a teknion but I was right according to ytour answers all along.

Thx

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals