Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations GregLocock on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Knobntube

    NEC 2005 110.26(C) and Bus Ducts

    110.26(C) was revised in the 2005 NEC to pertain to equipment rated 1200A or more that contains overcurrent devices, switching devices or control devices. This deleted the exclusion of equipment less than 6'-0" in width. Would a 1200A bus duct riser be defined as such equipment, subjected to...
  2. Knobntube

    Fire Pump supervised connection

    That's a good point. I've gotten in trouble before by specifying a non-fused disconnect ahead of the fire pump controller. Verbiage in NFPA 20 does not specifically allow the installation of a disconnect switch without overcurrent protection. Therefore, I was required to install a fused...
  3. Knobntube

    Fire Pump supervised connection

    I have found fire pump connections to be unique when it comes to NEC requirements and NFPA guidelines. I have become accustomed to providing a disconnect ahead of the fire pump controller in accordance with NEC 695.4. However, I'm second guessing myself, and considering using direct connections...

Part and Inventory Search