Electrician's Technical Reference Transformers Author:Stephen L. Herman ElectricianĘs Technical Referenceł Transformers focuses on the theoretical and practical aspects of single-phase and 3-phase transformers and transformer connections. Sample problems provide a step-by-step process for figuring different types of transformer calculations. Examples of transformer installation are in accordance with the 1999 Nation... more »al Electrical Code«, providing proper industry standards.« less