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  1. offett

    To throttle before or after...That is the question ..:)

    Thank you all.. I will always instal my orifice before my throttling valve with appropriate distance between the two to negate turbulent effects in system.
  2. offett

    To throttle before or after...That is the question ..:)

    We have an orifice plate to measure the flow and then a throttling globe valve to balance the flow in each branch in our system. Each branch has an orifice plate upstream of its throttling valve. I would like to know what are the advantages/disadvantages of throttling before the orifice plate...
  3. offett

    Wire/starter sizing for a 125 HP, NEMA Design B motor, 3 Phase, 460 V, FLA= 143 Amps, LRA=908 Amps

    Thanks for your responses..I have been doing low voltage controls engineering for the past five years and this higher polyphase voltage project I am managing has me a little excited/nervous! I have electrical contractors assisting me,but i wanted to do a rough sketch of how i would design the...
  4. offett

    Wire/starter sizing for a 125 HP, NEMA Design B motor, 3 Phase, 460 V, FLA= 143 Amps, LRA=908 Amps

    Greetings to all, I am looking to size a starter/wires for my 125 HP blower motor. It is 125 HP, 3 Phase, 460 Volts. The Full load amperage is 143 amps, however the "Locked Rotor Amps"=908 Amps. For now, lets assume I have a distance of 100FT back to my MCC. I understand that my wire size...

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