To ensure safety capacitors are reliable for line-to-line and line-to-ground applications, they must be certified to internationally accepted standards. The main standard for safety capacitors is IEC 60384-14 which is titled “Fixed capacitors for EMI suppression and connection to supply mains”. This is an internationally recognized standard and is referenced by all suppliers who produce safety capacitors. UL adopted this standard to create UL 60384-14 but it is almost identical to the IEC version. There are only a few minor deviations.