How do you handle the telephone/data incoming cables for strip mall shell building?

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My question is where the Demarx box located normally? If we want it locate in electrical room, do we need to install underground counduit for the incoming cables?
 
To answer your question - yes you usually need a conduit to their jbox or pole for an underground service. It really depends on the utility and you are best suited to get a hold of them and their field engineer. I have seen demarc boxes all over, if you have an electrical closet, that to me would be the best choice.
 
If the Demarx box is installed on the back of the building, is the cable to each tenant space going to be exposed before entering the building?
 
barbeer said:
you are best suited to get a hold of them and their field engineer.
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This would be your best advice so far. However, I would add that you look into the TIA standards specifically 569-B (Trunkated overview / guide version. more here)

You have (as we all have) heard people trying to get you jam all your panels into a puny closet over a sink, or the like, before right? Why do that to the phone and data guys too. The amount of space may seem excessive, but worth it down the line once you try to get into the room after everyone is in the building...

Over-lapping the work-space in an Electrical room is not a bad idea, (So long as you stear clear of transformers and mains.) as they will need access to the GEC for grounding. Normally, I put up one or two 4X8'X3/4" horizontal plywood panels, a #4 ground whip into the main panel and conduit out the street with 1~3 2~4" 3' sweep 90's (No more than 2 per run) for the DEMARK. Then depending on the the job spec's, either 1 1/2"~2" (Sweep 90's) +/or 25~50 pair cable to a closet in each each space with 110 blocks on each side. (Larger spaces may need more, smaller less) No less than 2 4-pair cat-3's per tenant. And conduit for house power circuits for Telco modems etc..

You may also want to pull 2 RG-6Q, and look into future fiber runs to each. But if is going to be an open slab before a pour - sell 'em a 3" PVC and pull rope to each unit and be done with it.
 
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