PetesGuide
Member
- Location
- Foster City, CA, USA; NEC 2014
I've got a messy set of AT&T communications cables coming into a 1907 wood building that is within a few feet of a railroad that will shortly have 25 kV wires running past it, so need to make sure everything is up to code, and then some. Given the funky set of cables coming to the building, I'm hyper-concerned about ground-loops.
Here's what's existing:
None of the above cables have any active service, but new service is going to be ordered soon.
Questions:
1) What are all the parts of 800 that can be used to urge the removal of the upper-floor MPOEs?
2) My preference is to have one of the upper-floor cables brought down to ground-level in case it has better quality pairs for internet service, and have the two remaining cables cut from the MPOEs and coiled up at the corner of the roof where they arrive from the telephone pole, so that they don't enter the building and trigger grounding requirements. Is that good enough, or do they need to be cut back further?
3) What is AT&T required to do to resolve code issues along these lines, and what can I cajole them into doing?
4) I'm going to be making this grounding system our museum's first safety-related exhibit. What are all the things it should cover?
5) What else do I need to worry about and do before we call AT&T for new service?
Here's what's existing:
- One ~10 conductor telephone cable coming from an underground conduit, with a visible ground wire running from the NID adjacent to the conduit, connected to something unknown under the concrete, adjacent to the building electrical supply entrance.
- Two ~10 conductor telephone cables coming from a telephone pole, routed to ground level adjacent to the NID mentioned above, with both bonded to an IBT that's connected to a ground rod.
- 3 additional ~10 conductor telephone cables coming from the same telephone pole, but feeding two separate MPOEs on opposite sides of the upper floor; neither have any visible bonding ties to the grounding system.
None of the above cables have any active service, but new service is going to be ordered soon.
Questions:
1) What are all the parts of 800 that can be used to urge the removal of the upper-floor MPOEs?
2) My preference is to have one of the upper-floor cables brought down to ground-level in case it has better quality pairs for internet service, and have the two remaining cables cut from the MPOEs and coiled up at the corner of the roof where they arrive from the telephone pole, so that they don't enter the building and trigger grounding requirements. Is that good enough, or do they need to be cut back further?
3) What is AT&T required to do to resolve code issues along these lines, and what can I cajole them into doing?
4) I'm going to be making this grounding system our museum's first safety-related exhibit. What are all the things it should cover?
5) What else do I need to worry about and do before we call AT&T for new service?