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  1. Refrigeration condensor unit display Calculation

    Would like to hear from others. Its been a while since I had to do calcs for refrigeration equipment. Wanted to double check my frige and evap pan calculation. The RLA is 12.9, The MCA is 19 for the...
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    19$$
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    702

    I agree with you. I think they really have out...

    I agree with you. I think they really have out did themselves making this a requirement. I just can't see what good will come of wanting to switch a lot of receptacles in commercial offices.
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    19$$
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    Receptacles shut off. they can use time clocks...

    Receptacles shut off. they can use time clocks LOL.
    ASHRAE 90.1 - 2010 section 8.4.2
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    19$$
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    Energy Code 50% switched receptacles

    Just curious of the Mike Holt guys opinion on this.

    I have seen these new construction office buildings that had to have at least 50% of the offices and other areas with sensor controlled...
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    37$$
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    1,339

    The highlighted red is what I am addressing in...

    The highlighted red is what I am addressing in your post. I am well aware of the common disconnect issue. I stated that in my original post #30, go read it again. What I am getting at is the...
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    I understand your point Don, however I think you...

    I understand your point Don, however I think you missed mine. I was referring to the other part of the code that forbade the sharing of neutrals in emergency circuits and in hospital care areas. Do...
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    37$$
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    I agree with this statement, especially since my...

    I agree with this statement, especially since my area has adopted the 2014 NEC. As most know, there were alot of old circuits that shared neutrals, even emergency circuits. If you tried to extend,...
  8. Thread: NEUTRAL

    by brother
    Replies
    15$$
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    611

    I agree with most of the posts (240volt, possible...

    I agree with most of the posts (240volt, possible smoking electronics), however, most non portable gfci's do not have 'open neutral protection, there fore your gfci will not work without the neutral....
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    Pool Light Electricution

    Sorry to hear about this boy getting electrocuted from a pool light. I though these all had to be gfci protected, but checking the NEC 2014 again, apparently it is only required if the voltage is...
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    16$$
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    Its my understanding you cannot use set screw...

    Its my understanding you cannot use set screw because the wiring to the controller has to have a 2hr (I think) fire rating and set screws do not provide this only compression or rigid conduit with...
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    LED lights on GFCI

    I was told that LED lights are not compatible with gfci's. I have seen one trip a gfci, but never really investigated why, it wasn't my project.

    Is it true that most LED lights are not compatible...
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    10$$
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    Thanks for the recent info. I suppose the info i...

    Thanks for the recent info. I suppose the info i heard about the change was just talk. Nothing official yet.
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    10$$
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    That's why its a recommendation and not required...

    That's why its a recommendation and not required . :-)
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    10$$
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    Thought I might share this comment I made at...

    Thought I might share this comment I made at another area ;) This is the reason for my question.


    The reason I am asking is because it was said that after so many years that the change was to...
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    10$$
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    Thanks for the info. However, didn't they publish...

    Thanks for the info. However, didn't they publish one that was more recent? I am looking for the most latest version if anyone has that link. Thanks.
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    10$$
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    FORBIDDEN Question on Hospital Receptacles

    Ok, I know this is a debate that went on for years and I am not asking for 'opinions' AND I am not looking for a debate on the topic because of the forum rules.

    I actually want to know has it...
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    13$$
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    How would this comply with the NEC as augie47...

    How would this comply with the NEC as augie47 had quoted?
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    13$$
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    This is single phase 3W. In laymans terms, 2...

    This is single phase 3W. In laymans terms, 2 hots 1 neutral :-)
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    13$$
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    Im not 'bidding' this job. This is a project that...

    Im not 'bidding' this job. This is a project that was done by others. I was looking at the work and was wondering should I say something about the load. whether I should 'sweat it' or not.
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    13$$
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    They used a #8 copper. #8 only good for 50amps...

    They used a #8 copper. #8 only good for 50amps and the calculation is 51. Also this is a long run (about 100ft), they didnt even account for a voltage drop. Even though its not required per NEC, it...
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    feeder calculation, Would you sweat it?

    Just saw another job they did with a feeder calculation for kitchen equipment. Very similar to the one I posted about before, here is the calculation

    17a 208v = 3536
    16a 208v= 3328...
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    323

    Ok. Since this is from a 4 wire 3phase system i...

    Ok. Since this is from a 4 wire 3phase system i guess the single phase for this feeder will be ok. I still would pull a same size neutral in case of add ons. i thought prohibition on the reduction...
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    Neutral Calculation No reduction

    Its been a while since I had to do a calculation lately

    Checking this neutral calculation for a feeder. These guys are putting in an expresso stand with some extra cooking equipment.

    They have...
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    not even for a gfci ?

    not even for a gfci ?
  25. What of the exception for emt and some others....

    What of the exception for emt and some others. Emt specifically NEC 2011 358.30(A) exception No. 1. where it can be increased to 5ft.
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