ECN Forum Forums Technical Discussion Technical Reference Area Transformers & Feeders: 1 Phase 3 Wire

Transformers & Feeders: 1 Phase 3 Wire

Five Drawings of Transformer Setups (Connection Schemes);
Primary and Secondary Feeders;
Plus OCPDs and Panelboards for:
Single Phase 3 Wire Transformers
(Two Voltage SDS)
NOTE: Click on Image to view Full-Sized Image

Drawing 1PH3W-1: 480V x 120/240V 1 Phase 3 Wire System - Center Tap Grounded Neutral
(Max. Voltage To Ground = 120V, With Grounded Conductor)
Single Panelboard fed by Secondary Feeders.


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Drawing 1PH3W-2: 480V x 120/240V 1 Phase 3 Wire System - Center Tap Grounded Neutral
(Max. Voltage To Ground = 120V, With Grounded Conductor)
Single Panelboard fed by Secondary Feeders, Additional Panelboard "Subfed".


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Drawing 1PH3W-3: 480V x 120/240V 1 Phase 3 Wire System - Center Tap Grounded Neutral
(Max. Voltage To Ground = 120V, With Grounded Conductor)
Two Panelboards fed via Tapped Feeder.


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Drawing 1PH3W-4: 480V x 120/240V 1 Phase 3 Wire System - Center Tap Grounded Neutral
(Max. Voltage To Ground = 120V, With Grounded Conductor)
Two separate Panelboards fed by Secondary Feeders- each set derived from "X" Terminals.


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Drawing 1PH3W-5: 480V x 120/240V 1 Phase 3 Wire System - Center Tap Grounded Neutral
(Max. Voltage To Ground = 120V, With Grounded Conductor)
Distribution Panel fed by Secondary Feeders.


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Text #3: Two Voltage SDS - Primary & Secondary OCPDs
(Click on Image to view Full-Sized Image)