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Recent content by downtownfool

  1. downtownfool

    What is better for a ground system - THW or THWN?

    I'm told they can't due to catholic protection and other reasons.
  2. downtownfool

    What is better for a ground system - THW or THWN?

    All i find on the two is this: THW (5) 75¡C 167¡F 90¡C 194¡F DRY & WET LOCATIONS SPECIAL APPL. WITHIN ELECTRIC DISCHARGE LIGHTING EQUIPMENT LIMITED TO 1000 OPEN-CIRCUIT VOLTS OR LESS, (SIZE 14-8 ONLY AS PERMITTED IN SECTION 410-31). MOISTURE AND HEAT-RESISTANT THERMOPLASTIC THWN (5) 75¡C...
  3. downtownfool

    So, if I am going to install the fo

    So sorry, this was meant to be posted within my previous post
  4. downtownfool

    So, if I am going to install the fo

    So, if I am going to install the following: Three (3) single phase 480 to 240/120 25kVA transformers One (1) single phase 480 to 240/120 10kVA transformer One (1) 15 HP 480V 3PH motor What size "three phase transformer" will I need? Does this chart i put together look right for what I'm...
  5. downtownfool

    Silly and simple question for all the electrical gurus (I'm mechanical newbie)

    Thank you. So to clarify, if there is only 40A of load at 240V will the 480V side of the transformer (fed by phases A and C) see 20A on each phase or will it be split between the two (A = 10A and C = 10A)?
  6. downtownfool

    Silly and simple question for all the electrical gurus (I'm mechanical newbie)

    We have a single phase 480V to 240/120V transformer being fed from a Motor Control Center by two phases/legs (phase A and C)...if the only load on the transformer is 240V (say 40 Amps) do I then say that phase A has 40A and phase C has 40A? What if there is 120V load? Can this load be on only...
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