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Type: Posts; User: fifty60

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  1. Replies
    19$$
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    376

    There will not be any permanent equipment...

    There will not be any permanent equipment connected to the outlets. The outlets themselves will be permanent, but they will be moved around the chamber as new product is brought in and out to test. ...
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    19$$
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    376

    As long as it is not an extension cord, then I...

    As long as it is not an extension cord, then I can use it? I am now looking at this "temporary power distribution" center. This is definitely not an extension cord. Anyone see any problems with...
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    19$$
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    376

    Is using the power strip to replace the permanent...

    Is using the power strip to replace the permanent fixed wiring system a no-go?
  4. Replies
    19$$
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    376

    Yes that does help. I have it narrowed down to...

    Yes that does help. I have it narrowed down to this Hubbell surge protector:

    http://www.newark.com/hubbell-wiring-devices/hbl8ps350yl/suppressor-surge-arrestor-plugin/dp/01X3404

    And this tripp...
  5. Replies
    19$$
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    376

    I need a power strip that can survive and operate...

    I need a power strip that can survive and operate in -20 C to 60 C with humidity ranging (above 0 C) between 20% and 95%. These temperature/humidity ranges are for testing purposes.

    Computer...
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    19$$
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    376

    What I am finding is that the power strip can be...

    What I am finding is that the power strip can be purchased with a GFCI plug. The individual sockets are not GFCI.

    Would it be preferable to purchase a surge protector that had the GFCI built...
  7. Replies
    19$$
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    376

    GFCI Outlet Strip

    I would like to find an outlet strip with 8 receptacles that will be installed in an environement that can range from -20 C to +60 C. The Humidity range (above 0 C of course) is 20% to 90% relative...
  8. Replies
    25$$
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    625

    The compressor manufacturer lists 3 things: RLA...

    The compressor manufacturer lists 3 things: RLA for sizing conductors/OCPD, RLA for sizing contactors, and max operating current. Non of this is listed on the compressor. What is listed on the...
  9. Replies
    25$$
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    625

    The numbers I gave earlier are for 3 seperate...

    The numbers I gave earlier are for 3 seperate compressors. They are not 3 different input amps for the same compressor. Sorry if that caused confusion. I have some equipment that will use a...
  10. Replies
    25$$
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    625

    OK, and from the KVA with the PF and EFF I would...

    OK, and from the KVA with the PF and EFF I would get the output HP. Here are the Amps and corresponding Watts the manufacturer is giving me. The first row (4.2A and 346W) are for a 115V rated...
  11. Replies
    25$$
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    625

    Yes, understood. What I need to put on the Fuse...

    Yes, understood. What I need to put on the Fuse label is the HP rating and the RLA. There is not an RLA on the compressor. I have the amps the compressor will draw with the CPR valve limiting the...
  12. Replies
    25$$
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    625

    That is, the HP rating for my disconnect..

    That is, the HP rating for my disconnect..
  13. Replies
    25$$
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    625

    If the compressor manufacturer is giving me the...

    If the compressor manufacturer is giving me the amps the compressor draws at a given capacity, then that amps will be the input amps right? To get the output amps, I would need the PF and...
  14. Replies
    25$$
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    625

    Is it correct to take the KW and convert it to...

    Is it correct to take the KW and convert it to HP? I know that this will be based of the true power and not the apparent power. Are HP rating generally converted from the true power?
  15. Replies
    25$$
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    625

    That is a good point. What is confusing me is...

    That is a good point. What is confusing me is since the manufacturer produces the amp tables based of of capacity, is it sufficient to use those amps on my equipment fuse label? Or, do I have use...
  16. Replies
    25$$
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    625

    Motor HP and FLA

    I have equipment that contains refrigeration compressors. Generally, I will always use the rated HP and RLA (rated load amps) to list on the fuse label.

    The equipment I am looking at now has a...
  17. Replies
    10$$
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    374

    The distance is very small, so I probably do not...

    The distance is very small, so I probably do not even need to ground the cable. The maximum run would be less than 20ft, and usually only around 10ft. Would I be better off not grounding at all...
  18. Replies
    10$$
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    374

    Communications Shielding/Wiring

    I know that it is preferable to always shield as close to the electronics component as possible. I have a an HMI screen that I am wiring RS232 and RS485 communications to. I have 2 questions about...
  19. Replies
    8$$
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    345

    480/277V Rated Breakers on a Delta System

    I have some 3 pole breakers that are 480/277V rated. Is it ok to wire these up on a delta supply, or do I have to have a Y supply? I would think that the 480/277V rating would not affect in any way...
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    8$$
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    356

    How Hi FLA on a 20A breaker

    I have some equipment that will hopefully become UL listed. Will UL hold me to the 80% of the CB rule when it comes to equipment that is powered from a standard 20A wall outlet? I am currently at...
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    3$$
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    193

    Very helpful, thanks, it makes sense.

    Very helpful, thanks, it makes sense.
  22. What color does the IEC mandate for 24VDC wire?

    What color does the IEC mandate for 24VDC wire? The best I can come up with in my research is brown and grey. But using Brown for line and also for 24VDC control wire can't be right...is it?
  23. Replies
    3$$
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    193

    Agilent Gain/Offset for Pressure Transducer

    I have a couple Kavlico P528 pressure transducers that I am trying to observe with Agilent data logger using BenchLink 3.

    The P528 has a pressure measuring range of 0 to 400 PSIA. The Nominal...
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    0$$
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    147

    Uninsulated Live Components Per UL508A

    Should I consider terminals as "uninsulated live components" if the components themselves are fully insulated?

    I am concerned about 21.2.1 regarding ventilation openings requiring a hood if they...
  25. Thread: EMC Testing

    by fifty60
    Replies
    6$$
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    218

    I currently use 14AWG MTW wiring. Would there be...

    I currently use 14AWG MTW wiring. Would there be any benefit in switching to a 14/2 twisted and shielded cable for the inputs of my electronic components, for example, my PID controllers, HMI,...
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