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  1. Thanks everyone; again as a note, we're under the...

    Thanks everyone; again as a note, we're under the 2014 NEC, but that doesn't mean I won't at least reference 2017 for information.

    jaggedben - we don't have intersystem bonding in place here, but...
  2. So the TIA-607-A is the contractual reference...

    So the TIA-607-A is the contractual reference alongside 2014 NEC in my case. I contacted BICSI as well who like myself desired only telecom bonds back at the TMGB, before using the telecom bonding...
  3. XFMR Electrical GEC at Telecommunications Ground Bar (Previous Question/New Post)

    I've raised this question before, but didn't seem to generate a lot of notice so I'll try and ask it again based on new information found. I've attached a one-line to provide a visual of the...
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    I'll try and do my best to clarify the...

    I'll try and do my best to clarify the installation - two (2) XFMRs are located in the same telecommunications room as the telecommunications main ground bar (TMGB), each feeding power panels that...
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    If anyone is curious, it was decided/determined...

    If anyone is curious, it was decided/determined to move the GECs off the TMGB to meet 250.52 & 250.64(C). Installer will route and terminate each GEC to closest steel column, thus connecting directly...
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    Follow up to this question. Attached is a photo...

    Follow up to this question. Attached is a photo of the installation as currently performed. Further reading and interpretation of 250.64(C)(1) & (C)(2) makes it further unclear about the allowance of...
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    Dry-type XFMR GEC to TMGB in same room?

    This is a thread that was started by another individual under General Electrical that I inquired on. I wanted to bring this to the forefront to see if anyone else has any additional thoughts:...
  8. thank you jaggedben. i appreciate the feedback....

    thank you jaggedben. i appreciate the feedback. I'm going to bring this inquiry to the front of the forum to get some other eyes on this if possible to get some technical reasons why.
  9. Thanks jaggedben - I should clarify that in my...

    Thanks jaggedben - I should clarify that in my case, the TMGB is connected back to an MGB in another room. This MGB then ties together all electrical system grounds, other GBs, building steel,...
  10. I have a similar setup as the one presented by...

    I have a similar setup as the one presented by strap89, but with the same dry-type XFMR feeding the panel located in the same communication room. Can you also route the GEC from the terminal bar in...
  11. Thanks, I appreciate the responses.

    Thanks, I appreciate the responses.
  12. Yes sir, Cu conductors; 90C rated, but downsized...

    Yes sir, Cu conductors; 90C rated, but downsized to 75C ratings to account for CB terminations. Not a XFMR secondary conductor; feeder routes to a room located a considerable distance, well over 25'...
  13. 4/0AWG on 250A Breaker - Is 240.4(B) Applicable?

    I believe I already know the answer to this, but wanted to confirm. We have an application where we have to downsize a cable to terminate at an MCCB in a switchboard. The change is from a 500MCM...
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    Thanks for the heads up. I'll make sure to...

    Thanks for the heads up. I'll make sure to backcheck since I didn't take measurements between supports yet. I did have that concern too about the physical damage interpretation and enforcement.
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    EMT Installation at Finished Floor

    I have an installation where EMT has been installed at the finished floor. The location is indoors, but in a mechanical room where equipment can theoretically be moved if necessary for maintenance....
  16. If anyone is curious about this, I found a GE...

    If anyone is curious about this, I found a GE Application Guide that helped to clarify expectations of hardware vs. LPS components...
  17. Extent of UL 96 Lightning Protection Components/Materials

    The content of my inquiry involves use of UL96 listed components. I don’t have access to the UL96 standard so I’m not certain yet if can enforce it for catenary dead-end clamp system where the...
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    I guess having the strut installed in a...

    I guess having the strut installed in a cantilever manner was what concerned me, and not so much that about the box being secured to the uni-stut itself. Hence my inquiry about needing a continuous...
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    Concern About Junction Box to EMT Support

    I have an installation that I question involving metal junction boxes being installed above an eventual drop ceiling, with some that are currently secured to cantilevers which we don't typically...
  20. Thanks for the feedback. It essentially confirms...

    Thanks for the feedback. It essentially confirms what I believed was the case.
  21. Lightning Protection Installer - Third Party Certification Requirements

    I'm currently on a project that requires LPS installers have a background with at least 2 years of LPS installation work, as well as a third party ceritification. I understand that LPS installations...
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    No general working space concerns; just general...

    No general working space concerns; just general trip concerns. Thanks for the confirmation.
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    Exposed RGS Routed at Grade

    I have an installation occurring on a job site. The contractor has routed RGS exposed alongside a concrete pad that feeds skid mounted equipment. While I have seen exposed conduit at grade in the...
  24. Yes, they are running through the building, and...

    Yes, they are running through the building, and yes all are surface mount. I don't think it will either, but in the end it may be done at the behest of the owner. I'm not aware of any contractual...
  25. Firestops at Electrical Panel (Conduit Penetrations)

    Thanks for feedback. No, it was not a miscommunication; he clearly stated/emailed "at the panelboard". We also are performing this work at a utility facility, so the jurisdiction falls at the behest...
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