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Minimum values of insulation resistance

Wombat
What is the science behind the 1 MOhm minimum insulation resistance? What is the basis for this particular value?
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    Therefore each circuit can pass an insulation test, but the whole board can fail, so what do you do next?



    But there is no BS 7671 value for a single circuit to pass/fail - just one for the complete DB's worth - 1MΩ*


    If the whole DB fails, then it's a fail.


       - Andy.


    * for initial verification at least.
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  • 0

    Therefore each circuit can pass an insulation test, but the whole board can fail, so what do you do next?



    But there is no BS 7671 value for a single circuit to pass/fail - just one for the complete DB's worth - 1MΩ*


    If the whole DB fails, then it's a fail.


       - Andy.


    * for initial verification at least.
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