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Recent content by mel127

  1. mel127

    neutral conductor on a separate conduit?

    Thanks everyone for the prompt response. @potteryshard, no we dont have any neutral at all.
  2. mel127

    neutral conductor on a separate conduit?

    We are planning to install 2 additional neutral conductors on a 3 phase, 5 KV circuit (2 circuits for redundancy). The conductors are underground. The entire run will cover 11 manholes at about 3000 feet. We are looking at different options and the correct way to do it. First option is to pull...
  3. mel127

    need help of transformer vendor

    Does anyone know of vendors that can supply padmount transformer 1500 KVA, 34.5KV delta - 480Y/277 secondary, copper both windings, padmount or substation type will do? We are trying to support the relief efforts in Haiti. This transformer will power up the berthing barge(suppose to come in the...
  4. mel127

    cable overheating

    Guys thanks for all the replys. I appreciate logging on to this site to gain more knowledge.
  5. mel127

    cable overheating

    Greetings, We have a problem of overheating cable/conduit here. We have 3 sets of wire coming from the swithcgear on the control room. The 4" conduit that is penetrating the flooring is overheating. Cables are installed one conduit for each phase? Is the conduit acting as a CT that is it is...
  6. mel127

    dc rating of NF panelboard

    Greetings, I have a spare NF panelboard(new one) and I would like to make good use of this for our DC application (120VDC) but I cannot find the rating of this panelboard. Does anyone here have any idea on the DC rating of this panel?
  7. mel127

    fiber optic backbone

    Greetings, I am not familiar with FOC that's why im posting this question. Can someone provide me with a basic materials/equipment to provide a FOC backbone to various locations.The FOC run is approximately 10 miles with 21 individual buildings serve.This will be done overhead to save extra...
  8. mel127

    tips on FAT

    thanks slavag. star for you....
  9. mel127

    tips on FAT

    Greetings, My boss will be sending me to attend a FAT for the Medium voltage switchgear we are about to install.The thing is, this will be my first time to attend this. Can you provide me tips of what i will be expecting?I am now starting to gather informations from NETA and other publications...
  10. mel127

    OPGW wire

    jghrist, does galvanized steel shield a requirement? i ask that because i have lot of copper conductor(4/0 awg and 1/0 awg)that was left over from previous project. instead of buying a new one might as well make good use of it. Thanks
  11. mel127

    OPGW wire

    jmmee97, all these issues are covered since we are the one maintaning the utilities. the customer are on top of the situation since they want this ballfied finished on schedule.anyway im just thinking of putting a static wire(copper) on top of the new poles to serve as lightning...
  12. mel127

    OPGW wire

    jghrist, the contractor didn't notice this until they're done after they set the pole foundation(can you believe that!). david, can i just install maybe a dummy pilot wire on the new poles to serve as lightning protection.am i violating any codes?
  13. mel127

    OPGW wire

    HI All, There is an ongoing construction to build a ballfield. Steel poles are being installed for the lightings and it was found out that these poles are near the transmission lines.(about 4 feet). Our best option is to install new poles parallel to the existing to meet the code requirements.My...
  14. mel127

    muse generator sound proofing

    Thanks catserving. Yes that is what we're trying to sound proof.The proposal is long term so I guess our best option is to repackage the 3 units.
  15. mel127

    muse generator sound proofing

    All, Any suggestions on how to sound proof or minimize the noise coming from 3 muse generators(1500kw each).We are thinking of installing a 20 feet wall around the perimeter but I know if this approach is the best.Maybe one of you already encountered this kind of problem. These DG's are in close...
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