Three-Phase Transformers makes the very troublesome exam calculation easy to understand for the electrician. A simple-to-follow 1 to 4 format designed by Tom Henry to answer the delta-wye questions. The DVD covers phase amps, line amps, efficiency, kva, delta high-leg, open-delta, balancing, etc. . A must dvd if you are taking a master electrician exam! This DVD also includes worksheets.

Each of the titles in this series is 75-90 minutes long.

This DVD is also available as part of the Master Series DVD Set.

Please Note: Tom Henry's DVD-R's are compatible with the vast majority of DVD players made after 2001. If you have an older DVD player, or one that does not support the DVD-R format, it may not play this DVD.