The National Electrical Code (NEC) requirements for overvoltage protection can be found in Art. 242. This Article is new with the 2020 NEC, and it replaces Art. 280 and Art. 285. Those Articles ...

There are two basic names for shoes that have some protection from electrical shock: Dielectric (DI) and Electrical Hazard (EH) rated. The differences between the standards are not usually understood, ...

Optocouplers and alternative isolation can provide protection against electrical hazards. This white paper discusses the safety considerations when using optocouplers and alternative isolators as ...

Dielectric strength testing for safety can be done with a DC or AC test voltage (the peak AC voltage being equal to the steady state DC voltage). The insulation must withstand this voltage for 60 ...