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  • Self Help Forums - Electric Phases in a house?
    Other voltages are seen too, for example a system may offer 480 volts phase to phase and 277 volts phase to neutral with additional transformers needed for 120 or 240 volts.
  • Vitrified waste option study report
    Transformers and load centers located near the facillty will kansform the 13.8kV to 480Y/ 277 Volt transformers down stream will transform the 480 Volts to 208Y/ 120 Volts.
  • Direct cementitious waste option study report
    Transformers and load centers located near the facility will transform the 13.8kV to 480Y/ 277 Volt , transformers down stream will lansform the 480 Volts to 208Y/ 120 Volts.
  • CsIX/TRU Grout Feasibility Study
    Transformers Lloadcenters 14will transform 13.8kV to 480Y/ 277 Volt ; transformers down stream will transform the 480 Volts to 208Y/ 120 Volts.
  • Grid of the future
    For most other customers, the primary voltage is stepped down with distribution transformers to the �secondary� or low-voltage level, 480Y/ 277 volts or 208Y/ 120 volts for the three-phase voltages serving most commercial buildings and 240/120 volts for single-phase �
  • Lineman's and Cableman's Handbook, Twelfth Edition > Electric System
    The distribution transformers reduce the voltage to utilization level, usually 120/240 volts single-phase for residential service and 208Y/ 120 or 480Y/ 277 volts three-phase for commercial or industrial service.
  • Lineman's and Cableman's Handbook, Twelfth Edition > Distribution Transformers
    Figure 15.16 illustrates the proper connections for three single-phase distribution transformers connected to a three-phase four-wire grounded neutral wye primary-voltage system to obtain 208Y/ 120 - or 480Y/ 277 - volt secondary service.
  • Achieving the 30% Goal: Energy and Cost Savings Analysis of ASHRAE Standard 90.1-2010
    Low voltage dry-type transformers are used in many commercial buildings to lower the primary voltage of the electrical service provided by the utility company from 277 volts (single phase) or 480 volts (3 phase) to 120 volts (single phase) or 208 �