Learn whether electric current or voltage causes electric shock, how electricity affects the human body, safe voltage levels, and key electrical safety principles.

Learn the differences between VHF and UHF frequencies, radio spectrum classifications, frequency ranges, applications, and communication advantages.

Learn the difference between lightning rods and surge arresters, how they work, their applications in power systems, and lightning protection methods.

Learn what VAC means in electrical systems, how VAC differs from VDC, why accurate AC voltage measurement matters, and how to measure VAC safely using True RMS testing equipment.

Learn what a BMS test is, why battery management system testing is important, common BMS test procedures, equipment, standards, and best practices for EV and energy storage applications.