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277/480V
Pages on 277/480V in the book include: Voltages on Secondary vs at the Meter, PTs and the Total Multiplier, Currents on Secondary vs at Meter, How PT Wiring Works, Pole Mount Setups, Form 9S Pole Mount: 277/480V.
From the book's own pages. 7 pages in the book cover 277/480V.

More on 277/480V in the book
- 4 more pages on 277/480V in Chapter 5: CTs, PTs and the Transformer Rated CanBuy chapter $25
- 2 more pages on 277/480V in Chapter 6: Pole MountsBuy chapter $25
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The Meter Guys