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Type: Posts; User: rlundsrud

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  1. Replies
    38$$
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    1,721

    He is incorrect. Only green for ground and white...

    He is incorrect. Only green for ground and white for grounded conductor matters. Power circuits can be any other color. Typically black, red, blue is used for 208-240 volt and brown, orange, yellow...
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    10$$
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    2,239

    Apologies, I noticed my mistake on the AI point...

    Apologies, I noticed my mistake on the AI point and tried to edit it but i accidentally created a new post. Please attempt to ignore my previous post.

    [QUOTE=rlundsrud;1999506]So for I/O...
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    10$$
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    2,239

    So for I/O (input/output) there are several types...

    So for I/O (input/output) there are several types of points.

    Digital inputs
    Digital outputs
    Analog inputs
    Analog outputs

    A digital output (DO) is a dry contact on a controller. It can have...
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    8$$
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    703

    You must also make sure that the breakers are...

    You must also make sure that the breakers are rated as type HACR. Most are these days but check anyway.
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    9$$
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    643

    Without knowing the manufacturer information on...

    Without knowing the manufacturer information on the generator and transfer switch I can't give you specific information. There are one of two ways you can do a generator connection when it comes to...
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    6$$
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    1,455

    In building automation bacnet and modbus are the...

    In building automation bacnet and modbus are the two that are used almost exclusively (not counting proprietary protocols like Andover). I've only come across a couple of sites that have any lon...
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    6$$
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    1,455

    Building Automation protocol diagnostics

    I'm just going to put this out there in case anyone has any questions on bacnet or modbus. If you want to know about different software or troubleshooting techniques feel free to ask. I am actually...
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    28$$
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    1,929

    You also are allowed to do that splice in the...

    You also are allowed to do that splice in the panel itself, you don't need to add a gutter.
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    11$$
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    I'm assuming that this was in conduit and the...

    I'm assuming that this was in conduit and the equipment grounding conductor buss was mounted directly to the panel. My guess is you were getting parallel paths between the EGC conductor and the...
  10. Replies
    11$$
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    614

    How far from the meter socket to the main panel...

    How far from the meter socket to the main panel is it? I can't remember what the exact distance, I think its either 5 or 6 ft but if it exceeds that in some jurisdictions they require a disconnect at...
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    4$$
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    487

    I believe under the latest version of the NEC you...

    I believe under the latest version of the NEC you also have to derate based on conductor count just as though they were in a conduit. This of course would depend on what revision is currently adopted...
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    13$$
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    996

    I've always used RMC or at least IMC. If you did...

    I've always used RMC or at least IMC. If you did use EMT, you would have to use compression fittings.
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    18$$
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    1,398

    Could you show your math please.

    Could you show your math please.
  14. They don't control it. It is larger cable for the...

    They don't control it. It is larger cable for the 60 amp version (I would guess the connector is the same). This is rated for and allows more current, hence the use of the larger breaker.

    The...
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    41$$
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    5,269

    Then yes, you can mix them.

    Then yes, you can mix them.
  16. Replies
    41$$
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    5,269

    You can't mix them. You can mix class 2 if you...

    You can't mix them. You can mix class 2 if you change it to class 1 and mark it as such. It can only be combined with power wires that are for that application.
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    10$$
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    937

    There might be a job spec that said he has to run...

    There might be a job spec that said he has to run an EGC in all conduit.
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    3$$
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    338

    I have always use rigid prior to the first...

    I have always use rigid prior to the first disconnect. I'm not sure if its required, it just what I have always done.
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    15$$
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    993

    It would take me a long time to collect enough of...

    It would take me a long time to collect enough of it to be worthwhile. Perhaps I can mix some toe jam with it, that might add up to an appreciable amount.
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    25$$
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    1,986

    My apologies for hijacking this thread but this...

    My apologies for hijacking this thread but this is to closely related I couldn't resist.

    Is an SCR heating control considered to be continuous or non-continous? By that I mean does having the SCR...
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    9$$
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    495

    Thermal Magnetic Breaker Trip cycle limit

    So I recently read that some breaker manufacturers (Eaton, Square D) say that after 2 trips at maximum current they should be replaced. I was a bit surprised to hear this, can anyone else comment on...
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    19$$
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    1,470

    Illinois doesn't have a state license either. You...

    Illinois doesn't have a state license either. You have to get a separate license in each municipality that you work/permit in. The closest thing is to have a Chicago license, it transfers anywhere in...
  23. That's exactly what it was, protection circuitry...

    That's exactly what it was, protection circuitry that locked put the vfd.
  24. Thread: VFD Question

    by rlundsrud
    Replies
    24$$
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    1,133

    I would like to add an additional warning on...

    I would like to add an additional warning on this. If the vfd has a bypass assembly, that will cause some big issues. A bypass assembly is an across the line starter that completely bypasses the vfd...
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    12$$
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    536

    I would make sure that the 24 volt control...

    I would make sure that the 24 volt control Transformer that feeds these is wired correctly. By that I mean make sure the common on the secondary side of the Transformer is grounded and you have...
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