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Recent content by bisonprofab

  1. bisonprofab

    Welding Jig for Aluminium Fabrication

    This would depend on how long it was going to be in the jig. It would also depend on how large the frame was and the type, thickness of material and the amount of area to be welded. Having said all of that and not knowing the specifics, I can only answer vaguely. Most of the time, we use...
  2. bisonprofab

    Callout on print for NEMA 4 enclosure

    This is strange. We specialize in NEMA enclosures, and our engineers haven’t seen this before either. According to this acronym dictionary, some suggested definitions that might fit include: http://acronyms.thefreedictionary.com/C/W -Compatible with -Complete with -Clockwise Presumably you...
  3. bisonprofab

    NEMA 4X enclosure

    Yes, drilling a drain hole with no additional protection will void an enclosure’s NEMA 4X rating. However, there are a couple of options on the market for removing moisture or condensation from within a NEMA 4X enclosure. - Crouse-Hinds offers a NEMA 4X breather/drain. Installed properly, it...
  4. bisonprofab

    NEMA 4X enclosure

    The simple answer is "no" - you can't have basic open vents with passive airflow and still maintain a NEMA 4 or NEMA 4X rating. However, it is possible to have active ventilation, but there must be added protection to prevent moisture from entering the enclosure while still maintaining ventilation.
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