Comments

2 comments

  • Avatar
    Alexander Gault

    Wye & Delta are both forms of 3 phase electricity. Most residential houses use single phase; 2 hot wires / 1 neutral 240V for larger appliances (dishwasher, oven etc.) and 1 hot wire 1 neutral 120V for everything else (lamps, electronics etc.).

    Large commercial buildings can save money and energy running 3 phase. The current here is 208 V because its always on (1/3 sin of 360). Delta runs as a triangle (greek symbol D) and has 4 wires, Wye runs like a star (or the letter Y).

    Delta has 4 wires so it is slightly cheaper (less copper, and less material makes simpler installation). Delta has 3 hots and a ground wire. It is less common and used just for motors (the constant on/off consumes less energy without a neutral switching back & forth) and Delta is also used for running electricity long spans (cost savings, & more efficient).

    Wye has 5 wires total (3 hot, a ground & a neutral) and seems to be safer and more common. 

    0
    Comment actions Permalink
  • Avatar
    Carie Penabad

    Many thanks Alexander.

    0
    Comment actions Permalink

Please sign in to leave a comment.

Powered by Zendesk