Electrical Construction & Maintenance

Stumped by the Code? Code Requirement for Sizing the Overcurrent Protection of Conductors

All questions and answers are based on the 2017 NEC. Q. What is the Code requirement for sizing the overcurrent protection of conductors? A. Except as permitted by Sec. 240.4(A) through (G), ...
Electrical Construction & Maintenance

Stumped by the Code? Requirements for sizing equipment grounding conductors to a motor branch circuit

A. Equipment grounding conductors of the wire type must be sized not smaller than shown in Table 250.122, based on the rating of the circuit overcurrent device; however, the circuit equipment ...
T&D

Two, Three or Four Winding Protection for Transformers of All Sizes

Beckwith Electric's Transformer Protection System M-3311A provides protection, control, monitoring and user interface functions for two, three or four-winding transformers. The system includes ...
T&D

Transformer Switching & Protection

For utilities, proper protection against high voltage transient overvoltages and overloads is critical to ensure maximum life of their power transformers. Failure to do so can result in significant ...