Im trying to determine the correct MOP for a commerical humidifier. The unit is 51kW. If i go by my standard motor calculations by the tables in the CEC i get an MCA 77Amps and MOP 175Amps. Is a humidifer calculated differently than a regular motor?
Im curous about CT sizing for a 347/600V service entrance. It being 600A 100% rated, would a 600/5 CT become saturated near the full 600A mark? Would this application require a 800/5 CT instead?
Is it really necessary for computer recpetacles to have dedicated neutrals? Is it because of switch mode power suplies overloading the neutrals? I cant see it being for power quality..?
Anyone know the specs on the size of a electrical room loop ground? I cant seem to find the size of bus required. There's around 4000A fault current at 12.47kV. Im thinking its around 50 or 75mm by maybe 5mm copper bus.
I realize this is a multi-directional complicated topic however I'm looking for a 'next step' in my design.
The design revolves around replacing some oil-filled pole top transformers with a unit substation. The capacity is increasing from 1100kVA to 2500kVA. We are using a wye-grounded to...
Im trying to spec a 12.47kV load break switch with a 600A fuse, or close to it. Finding the 600A switch is easy but I cant seem to find a 600A fuse/fuse holder. Only 540A but requires 800A holder, what am I missing?
Im attempting to obtain information regarding setting the LSI settings on magrini galileo circuit breakers. Has anyone ever used/heard of these before? Specially type MG. I know this is a shot in the dark.
I've attached a rough sketch of a communications riser for a school design Im working on. I'm questioning if the bonding layout for my racks is appropriate. Specifically if its required to bond each rack to its respective building steel, of if I should keep a isolated ground back to the main...
