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How do you wire for 480V - 120/240V on 1 phase S3 type transformer (e.g. EE37S3H)?

Connect a jumper between the H2 and H3 terminals.and bring the 480V in on H1 & H4. Do not connect any inputs to the H2/H3 connection
Connect a jumper between the X2 and X3 terminals. This will serve as the neutral should be bonded to ground. There will be 240V between X1 and X4 with 120V between X1 and the X2/X3 junction and 120V between X4 and the X2/X3 junction. Again, X2/X3 will be the neutral.


CTA-ID : 2047478
FA125902  |  14-Jan-2011  | Wiring
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