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  1. resqcapt19

    load assumption (on panel level) for receptacle in bathroom (hair dryer)

    If this is not a dwelling unit, there is no requirement for a 20 amp circuit or even a receptacle in the bathrooms. Assuming it is not a dwelling unit the code only requires a load calculation of 180 VA per receptacle. If it is a dwelling unit the bathroom branch circuit load is included in...
  2. resqcapt19

    UL Standards UL1008M/UL 414 --- Meter mounted transfer switch

    The requirements of UL 1008M and the requirements of UL 414 that are referenced in UL 1008M must both be met for a listed meter mounted transfer switch. Note, many utilities do not permit these to be used. My local utility does not and one of their objections is the neutral jumper that must...
  3. resqcapt19

    Residential load calcs

    I can't see my demand on my utility website...they only show me a kWH usage in 15 minute increments.
  4. resqcapt19

    United States Commercial Voltages

    While a lot of equipment installed in the US is required to be listed, there is no requirement that it be listed by UL (Underwriters Lab. There are multiple listing agencies that can list equipment for use in the US. One list of such agencies can be found at OSHA, as they maintain a list of...
  5. resqcapt19

    Short circuit current for control panels

    What type of machines do you build panels for? In what type of occupancies are they typically installed in? You are doing your customers a huge disservice if your panels are typically install in occupancies that would be expect to have an available fault current exceeding 5 kA. The cost to...
  6. resqcapt19

    Sizing Busduct

    As long as the busway (busduct) is protected at or below its ampacity, I don't see an issue. 368.17 in the NEC.
  7. resqcapt19

    Water in electrical boxes at garage

    I would install a conduit tee fitting with a drain on the bottom, and bring the liquidtight flexible metal conduit of out the side fitting of the tee. However that won't fix issues with any connections in box that is in the ceiling. There are wire connectors listed for wet locations that could...
  8. resqcapt19

    Zone 22 equipment

    The NEC, NFPA 70, requires the equipment installed in a Zone 22 location to be listed and marked as suitable for the location. This is a bit more restrictive than the NEC requires for a Class II, Division 2 location. 506.20(C) Zone 22. In Zone 22 locations, only equipment listed and marked...
  9. resqcapt19

    750 MCM Parallel Runs Entering Building

    Is this a multiconductor cable, or single conductors? In general, the minimum permitted bend radius for the conduit bends is suitable for the installation of single conductors.
  10. resqcapt19

    Access to Emergency VFD

    Not sure anything in the NEC would require that equipment to be readily accessible. That equipment is accessible, but it is not readily accessible. Accessible, Readily (Readily Accessible). Capable of being reached quickly for operation, renewal, or inspections without requiring those to...
  11. resqcapt19

    Ground Rod

    The only time the NEC requires testing of a grounding electrode is the case where you want to use a single rod, pipe, plate electrode. The main rule says electrodes of those types must be supplemented by another electrode of one of the types in 250.52(A)(2) through (A)(8) 250.53(A)(2)...
  12. resqcapt19

    Electrical Conduit Hangers

    "Fiberglass" conduit is covered in Article 355 of the National Electrical Code, Article 355 Reinforced Thermosetting Resin Conduit (RTRC). There are no specific requirements as to the types of support that can be used with RTRC.
  13. resqcapt19

    Fire shuts down I10 in LA

    The small pops are common with hot burning wood fires, and it could also be spalling concrete. Some of the louder ones were probably truck tires, and the big ones, likely propane tanks from the fork lifts.
  14. resqcapt19

    Fire shuts down I10 in LA

    There were 25 engine companies, 12 truck companies and multiple chiefs and other LA fire department units assigned to this fire.
  15. resqcapt19

    Fire shuts down I10 in LA

    Listening to the fire radio, there were active commercial pallet yards involved in this fire. They were also having to tag hydrants outside the immediate area to supply enough water....multiple hose lines at 250 GPM, and master streams at 750 to 1500 GPM. Fire extended to buildings in the ares.
  16. resqcapt19

    MCC vs panelboard feed for pumps

    I am sure you could specify the lug size when you order the MCC. They are typically mechanical lugs bolted to the bus.
  17. resqcapt19

    NFPA FIRE PROTECTION HANDBOOK 21ST EDITION.

    It is my opinion that the move to not have PDF copies of their publications will drive even more piracy. People who what a PDF can now only get one from a pirate source...and those sources are out there. Those same people, in the past, would have purchased the PDF from the NFPA.
  18. resqcapt19

    Use of Intrinsically Safe Wiring for a Non-Intrinsically Safe Signal between Two Safe Areas

    From Electrical Contractor Magazine. "Section 504.10(A) requires IS apparatuses, associated apparatuses and other equipment to be installed in accordance with the associated control drawing. A control drawing provides specific information and instructions related to wiring methods, length of...
  19. resqcapt19

    Adding conduit holes on side of Switchgear in the field

    Standard LBs are often not even suitable for 600 volt conductors. In many cases, even the mogul LBs will not be suitable for higher voltage cables.
  20. resqcapt19

    Use of Intrinsically Safe Wiring for a Non-Intrinsically Safe Signal between Two Safe Areas

    If this installation is covered by the NEC, how will you comply with 504.10(A).

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