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  1. bar01

    Site wiring

    IEEE -Std 1100 has been revised to 1999 version. What is this "specification" going to be used for? You mention electricians - this would be a construction or material specification. By "Architect" I assume you mean an Architectural Engineering firm - or Consulting...
  2. bar01

    ENGINEERING CALCULATION BOOKS

    I have quite a collection of EE books including IEEE and American Electrican's handbook. If you had to have one book - I would strongly suggest "Electrical Engineers Portable Handbook" by Bob Hickley. Not only is it truly portable - but it condenses most of the usefull information...
  3. bar01

    Generator Output vs. Power Factor.

    I think it is important to focus on the PF's for your facility. It depends on what kind of facilities you are designing. I have designed many high tech facilities. The power factor for these types of facilities is more typically in the .9 to .95 pf range. With energy efficient motors, and...
  4. bar01

    Matching Transformers and 208 V Panels

    1) Yes - best matched panel per transformer. 2) Don't worry about size of panel. Assume that you can load it to maximum 80% of panel main breaker. Unless of course panel main breaker is 100% rated (which I spec on panels 800 amp an above). 3) In my opinion it is bad design not to assume panel...
  5. bar01

    Generator sizing

    You can get programs for free from the major engine generators 1)Onan 2)Caterpilar
  6. bar01

    Matching Transformers and 208 V Panels

    Been looking at best way to match 120/208 V panels and 480-120/208V transfomers. I am aware of code "maximums" on CB's, but of course you can use lower sizes. Assume 208/120V panels have main breakers, and transformers are sitting next to panel. Panel 100A , Tranformer 45 kVA Panel...
  7. bar01

    Electric Systems Symbols

    You may not find the symbols on a web site. You will have to purchase them. A good place to start for symbols is NECA NEIA standard NECA 100-1999 "Sybmols for Electrical Construction Drawings". www.neca-neis.org

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