Just took and failed the test. Topics not covered in/not covered enough the practice tests include:
Common IEEE Device number names
Recloser functions and definitions
MEDIUM VOLTAGE BREAKERS!!!!!
Operations and construction of amp/volt/ohm/mego meters
Oil sample analysis elements/ symptoms
LOTS OF ARC FLASH ratings and boundaries.
Confined spaces definitions/ rules and regulations/ person in charge
schematic diagrams/ diagnosing interlocks
Happy studying