We are designing a power distribution system,12.47kV and 480V,and we are spec'ing an S&C Vista switch for the MV side. It has become our standard that for arc-flash mitigation on the 12.47kV-480V transformer secondary conductors bushing CT's be installed on the low side bushings of the...
We are working on a project where a new 3000A swtichboard is being installed at an industrial facility, but the customer wants to use the existing conductors and rigid steel conduit for the feeders to all of the loads. None of them have equipment grounding conductors (EGC's) installed. While...
I am working on a fire pump design for an industrial facility fed by overhead conductors. NFPA 20 considers a source to be reliable if it is not supplied by overhead conductors immediately outside the protected facility. As this is an industrial facility with various buildings and outdoor...
