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  1. Replies
    8$$
    Views
    624

    800V phase to phase?

    Had a guy yesterday get the following readings at an RTU
    Fused disconnect, 3PH 480V unit 25A circuit

    Line side of disconnect
    L1-G 280V
    L2-G 280V
    L3-G 280V

    L1-L2 480V
    L1-L3 480V
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    11$$
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    1,430

    bear in mind, we don't have the individual...

    bear in mind, we don't have the individual compressor name plates/ratings....we have the manufacturer cut sheets which simply give us the MCA and MOCP. Spoke with an engineer today who leaned...
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    11$$
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    1,430

    Sizing an HVAC only panel

    we have a situation where a brand new building is a 208/120V service, but someone goof'd and ordered 460V RTU's...the RTU manufacturer is asking us to look at solutions that don't involve replacing...
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    0$$
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    7,010

    Hiring Service Techs

    We are currently hiring electrical service techs for NJ, NYC, LI and eastern PA.

    We offer a competitive benefits package that includes full medical, company vehicle, etc.

    We're looking for guys...
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    7$$
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    1,014

    yes...230.2(E)...my mistake... that's the...

    yes...230.2(E)...my mistake...

    that's the issue, there are vague requirements, including a directory, but I've got no idea what one might or should look like
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    7$$
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    1,014

    NEC 230-1(E) compliant signage

    Does anyone have a template or a source for 230.1(E) compliant signage?

    we are doing a project where there are 3 services feeding the building in 3 separate locations. We need to provide...
  7. looking for a specific electrical information website

    All - i can't for the life of me remember the web address...there is/was a site along the lines of electric.tv (not the address) that was a plethora of information from both manufacturers and...
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    1$$
    Views
    1,297

    residential grounding question...

    simple question regarding grounding of a resi service...the house has and existing 200A MCB service...ground rods and water pipe ground...

    there was an addition put on on the opposite end of the...
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    2$$
    Views
    1,220

    Diesel Generator Man Hour Installation Question

    1320kw Cat Diesel Generator - pad mounted on grade

    anyone have a good guesstimate of man hours to build out and wire unit itself?

    this is to be a permanent backup...wiring will already be...
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    7$$
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    2,746

    Dick's sporting goods

    Looking for the average # man hours for a union installation on one of these...it's a 1 floor retro of existing building...

    just trying to get a handle on man hours for power/lights/vdv...
  11. Replies
    1$$
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    1,329

    Wet Location Fluorescent strip cover problem...

    anyone know where we can get a 103" long cover for an 8' 2 light strip fixture for a wet location...

    no name on the fixture, but it's comparable to a Mercury M401 or a Lithonia DMW or...
  12. Probably the town is requiring it. Just filed a...

    Probably the town is requiring it. Just filed a permit in the town I live in, and the requested it....even though the permit was signed and sealed and contains all our information....

    Just...
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    27$$
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    8,305

    My gut feeling is that the hvac company you...

    My gut feeling is that the hvac company you covering probably has gotten themselves a pretty not so good reputation....and you getting caught in the crossfire.
  14. Replies
    25$$
    Views
    6,728

    OK, lets see if this helps - not trying to hide...

    OK, lets see if this helps - not trying to hide info, just don't think of everything:-)

    No adjustable trip settings....
    200a 1Ph mcb - load is 150A on phase a and 143 on phase b
    Light string 1...
  15. Replies
    25$$
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    6,728

    Just to clarify: Not looking to change CB's at...

    Just to clarify:

    Not looking to change CB's at this point until we know it is a solution
    We will be repairing the problem wiring

    Mostly, I'm trying to find what would cause the 200a mcb to...
  16. Replies
    25$$
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    6,728

    Pierre, Mcb was replaced after the bout of...

    Pierre,

    Mcb was replaced after the bout of tripping let year...

    Testing is the next step...the infrequency of the problem is the only issue...we could have a monitor on for 6 months with no...
  17. Replies
    25$$
    Views
    6,728

    no common electrical room - separate drops off...

    no common electrical room - separate drops off the pole to each store - individual meters/panels

    we've been there for about 5-6 yrs now, no problems until last year.

    original install was bad -...
  18. Replies
    25$$
    Views
    6,728

    we've done that...less the fuses... we know...

    we've done that...less the fuses...

    we know where there are problems...

    what we don't know is if those problem areas are causing the 200A MCB to trip vs. the branch breaker...

    what we are...
  19. Replies
    25$$
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    6,728

    no short in the panel...how it was explained to...

    no short in the panel...how it was explained to me was that the fault came back on the ground and the MCB was the gatekeeper to the utility power...throw in what you said about AIC ratings at that...
  20. Replies
    25$$
    Views
    6,728

    we inherited this mess...they have plans to...

    we inherited this mess...they have plans to replace in the next two years...but...for now, it's triage...

    the panel that's there is a siemans 1PH 200A MCB plug in load center...they are willing to...
  21. Replies
    25$$
    Views
    6,728

    i tried...Peter's phone is disconnected and your...

    i tried...Peter's phone is disconnected and your office kept hanging up on me as soon as I said I was a friend of yours:D

    what are you thinking? some quick blow fuses?
  22. Replies
    25$$
    Views
    6,728

    another tripping main - parking lot lighting

    looking for some thoughts, theories, ideas...

    1 PH 200A load center fed from POCO pole top transformer - short circuit rating unknown

    mcb is 22k AIC

    panel feeds parking lot lighting and site...
  23. Replies
    1$$
    Views
    1,231

    hvac control system

    Looking for an entry level hvac control system for use with a system that has 1 rtu and 5 vav's.

    Hvac is installed, working with what we got.
  24. Replies
    10$$
    Views
    4,160

    i'm not so much looking for a mobile billing, as...

    i'm not so much looking for a mobile billing, as I am a mobile invoicing...we've gotten away from resi, and what little we do, it's no problem to write an invoice and collect payment.

    i'm looking...
  25. Replies
    10$$
    Views
    4,160

    that's a issue for us as well. looking for...

    that's a issue for us as well. looking for something that can integrate into quickbooks. but I have no desire to send quickbooks out with all the field techs on an ipad:D

    looked at a couple of...
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