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Recent content by drknexus02

  1. drknexus02

    Grounded Neutral systems

    figured out what was wrong btw. i was on the right path and i tore the equipment apart. the neutral terminal strip was grounded out. so i lifted that and kept the transformer and the generator grounded. the line nose is almost non existent now .4V. Thanks for all the advice. because of this and...
  2. drknexus02

    Grounded Neutral systems

    that is the primary reason that i came here and asked this question. i read a few forums online and they said otherwise. the conclusion i came to here is that i need to simply advise my supervisors and up that we need to redline the system and seek consultation from some form a power systems...
  3. drknexus02

    Grounded Neutral systems

    i am not sure about this but i have been doing a bit of reading and is this bond from neutral to ground suppose to be just a cable or a bracket? i was under the impression that you are suppose to use a high impedance resistor or a varistor for that connection. i understand that you are suppose...
  4. drknexus02

    Grounded Neutral systems

    actually i am a air force power production journeyman. the problem that i have is that i have a ground loop in the system. 2+ points where neutral and ground are bound. now what i also have to do is figure out what else is wrong with the system. i admit i am only a maintainer and not an engineer...
  5. drknexus02

    Grounded Neutral systems

    i have been considering going to the grounding and bonding class NFPA 70 so they may be able to explain it to me
  6. drknexus02

    Grounded Neutral systems

    the only reason i mention this is because i have worked with comm equipment and we always let the neutral be isolated from ground. mind you there were varistors connecting ground to neutral but the bonding plate was removed. that was the requirement for their equipment due to the K-Factor by...
  7. drknexus02

    Grounded Neutral systems

    well i am having some confusion as far as what the NEC requires for grounding your neutral on power distribution systems... 250.2 A (5) EFFECTIVE GROUND-FAULT CURRENT PATH- Electrical equipment and wiring and other electrically conductive material likely to become energized shall be installed...
  8. drknexus02

    been blocked by every electrician as far as article 250 is concerned

    well the equipnemt that this trailer is energizing requires 240V 60HZ 0/N/G. the problem with converting the who system to only that configuration and not have the transformer is that it has to have the capacity to utilize commercial power as a primary power source and the generator is the...
  9. drknexus02

    been blocked by every electrician as far as article 250 is concerned

    funny you ask that. yes the neutral conductor is directly connected to ground and it ends there. and the transformer converts from US O/O/G to O/N/G 230V 60HZ. dont ask i didnt design anything here and yes we are in the US. i cant change the load requirements and i have an idea for the fix if my...
  10. drknexus02

    been blocked by every electrician as far as article 250 is concerned

    btw the 16kva is a UPS with a O/O/G input and output... i need to scan it when i get home to white out the manufacturers name and contact info.
  11. drknexus02

    been blocked by every electrician as far as article 250 is concerned

    well that answers one part of the question. pretty much i need to evaluate exactly what is wrong with the system and what we need to do to rectify the problems it currently has. unfortunately, everyone has this idea that your neutral is pretty much earth ground so you can bond it at anytime and...
  12. drknexus02

    been blocked by every electrician as far as article 250 is concerned

    ok i currently have a system consisting of a 10kva single phase 3 wire 0/0/N-G bonded generator connected to a 16KVA 2 wire 0/0/G connected to a multi-tap isometric transformer to convert 2 wire 240 (0/0/G) to 230 (O/N/G). Now this system is mobile (trailerized) and the generator does not carry...

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