Quote:
Originally Posted by GMB
But Y class is built to be like 2 caps in series so you could always use a pair of X class of double value, with added bonus that you can check it for single failure.
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Since X capacitors may fail shorted and Y capacitors may not, I doubt this would satisfy all appliccable rules. The testing voltage for Y capacitors is double that of X capacitors, though, so the series circuit would at least satisfy that criterion. Some capacitors are especially manufactured to fulfil both roles, though.