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  1. 480V Delta, 3-phase, 3-wire (ungrounded) service

    Started by Ranger86 on 08-04-17
    • Replies: 2
    • Views: 245
    Last Post: 08-04-17 12:22 PM
    by Ranger86  Go to last post

    Forum:
    NEC

  2. 3-Phase Open Delta with Residence Attached

    Started by MJRobinson on 08-02-17
    • Replies: 9
    • Views: 397
    Last Post: 08-03-17 09:47 PM
    by Smart $  Go to last post
  3. Transformer Neutral required for Inverter Interconnection?

    Started by SunFish on 03-28-17
    2 Pages
    1 2
    delta, high leg, neutral, solar transformer, transformer
    • Replies: 16
    • Views: 1,217
    Last Post: 03-29-17 09:26 PM
    by Smart $  Go to last post
  4. What is Closed Delta?

    Started by SunFish on 10-20-16
    5 Pages
    1 2 3 ... 5
    closed delta, delta, high leg
    • Replies: 40
    • Views: 4,996
    Last Post: 11-02-16 03:17 PM
    by jaggedben  Go to last post
  5. 120 / 240V Service .... Assumed Delta????

    Started by AWinston on 01-20-16
    delta, service
    • Replies: 8
    • Views: 1,808
    Last Post: 01-23-16 11:31 AM
    by augie47  Go to last post
  6. Wye would that be?

    Started by Open Neutral on 02-27-14
    delta, fairgrounds, wye
    • Replies: 6
    • Views: 3,276
    Last Post: 03-04-14 01:08 AM
    by Open Neutral  Go to last post
  7. 2500KVA xfmr service entrance not grounded - ?

    Started by francis.key19 on 01-23-14
    arc flash, delta, grounded, grounding, wye
    • Replies: 3
    • Views: 4,088
    Last Post: 01-31-14 11:00 AM
    by francis.key19  Go to last post
  8. Does transformer polarity change secondary rotation?

    Started by 11bgrunt on 11-25-13
    2 Pages
    1 2
    delta, polarity, transformer configuration
    • Replies: 16
    • Views: 9,843
    Last Post: 11-26-13 05:53 PM
    by templdl  Go to last post
  9. 120/208 to 480 wye-delta

    Started by Melanconryan on 05-24-12
    2 Pages
    1 2
    corner, delta, electrial, transformers, wye
    • Replies: 13
    • Views: 8,835
    Last Post: 05-26-12 02:58 AM
    by Jraef  Go to last post
  10. 240 3ph ->480 Xfmr

    Started by Open Neutral on 03-19-12
    4 Pages
    1 2 3 ... 4
    3 ph, delta, neutral, wye
    • Replies: 31
    • Views: 14,136
    Last Post: 03-20-12 08:31 PM
    by ptonsparky  Go to last post
  11. Lost leg on Delta Transformer?

    Started by Psychlo on 01-19-12
    5 Pages
    1 2 3 ... 5
    • Replies: 44
    • Views: 15,328
    Last Post: 04-29-12 12:10 AM
    by Psychlo  Go to last post
    • Replies: 0
    • Views: 2,345
    Last Post: 09-26-11 06:00 PM
    by spectrum  Go to last post

    Forum:
    NEC

  12. Secondary Current Calculations

    Started by jonathan12 on 08-03-11
    calculation, current, delta, transformer
    • Replies: 9
    • Views: 23,888
    Last Post: 08-05-11 06:42 PM
    by Smart $  Go to last post
  13. 240v grounded 3 phase

    Started by casjos on 07-13-11
    2 Pages
    1 2
    240v, 480v, delta, grounding, transformer
    • Replies: 10
    • Views: 10,025
    Last Post: 07-31-11 11:40 AM
    by kwired  Go to last post
  14. EGC for Transformer Delta Secondary

    Started by beanland on 05-23-11
    250.122, delta, secondary, transformer
    • Replies: 1
    • Views: 8,976
    Last Post: 05-23-11 06:15 PM
    by augie47  Go to last post

    Forum:
    NEC

  15. Calculating Phase Currents for Unbalanced Loads

    Started by mea03wjb on 07-15-10
    11 Pages
    1 2 3 ... 11
    delta, line, phase, unbalanced load
    • Replies: 105
    • Views: 39,717
    Last Post: 08-04-10 12:21 PM
    by jghrist  Go to last post
  16. 240/120 delta

    Started by esc1234 on 07-12-10
    delta, high leg
    • Replies: 2
    • Views: 3,389
    Last Post: 07-12-10 09:14 PM
    by mcclary's electrical  Go to last post
  17. 240 Volt corner grounded delta generator

    Started by Brian B on 11-20-09
    delta, generator
    • Replies: 2
    • Views: 3,991
    Last Post: 11-21-09 12:43 AM
    by LarryFine  Go to last post
  18. wild leg panel questions

    Started by Bob-o on 03-12-09
    2 Pages
    1 2
    3 phase, code, delta, panelboard, wild leg
    • Replies: 19
    • Views: 11,068
    Last Post: 03-14-09 04:41 PM
    by Bob-o  Go to last post

    Forum:
    NEC

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