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  • Users: sepanolo
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  1. sepanolo

    Short Circuit Current Rating for 4000 Amp Switchgear

    I have a project where the facility has a 4000 Amp RL Siemens Switchgear lineup as part of a double ended substation. The gear is fed from a 2000KVA transformer and the available fault current is about 69kA at 208 volts. The 4000 Amp main is rated 85kAIC but some of the feeders are rated 30kA...
  2. sepanolo

    Sizing Generator with UPS

    I have heard that when a stand-by generator is connected to a UPS, the generator should be rated at least 3 times the KVA rating of the UPS. Does anyone know where this recommendation comes from? I have a project with a 200 KVA UPS system which would require a minimum of 600KW worth of...
  3. sepanolo

    Autodesk Building Systems 3

    Has anyone here used Autodesk Building Systems 3? I am interested to find out if it is worth the price tag for the use of the electrical portion of the package.
  4. sepanolo

    Market Research - Dodge Reports

    Has anyone here used Dodge Reports to do market research for new leads in MEP engineering consulting work? I am an Electrical Engineer looking for new ways to drum up new business. I know the Dodge Reports are geared towards contractors but I was wondering if they had any value to the...
  5. sepanolo

    balancing panelboard loads in excel?

    Does anyone have a spreadsheet to balance the load of a three phase panelboard? I am currently using a simple spreadsheet to total the loads on the three phases but I need to modify my spreadsheet to balance the loads per phase to within 10 percent of one another. Any information would be...
  6. sepanolo

    VFD textbook for PE exam?

    Can anyone recommend a good textbook about VFD's with practice problems for the PE exam?

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