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| Never draw a power PCB like this |
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| EEEnthusiast:
If you have any ground pours near those contacts, I would recommend to move them apart and have no ground fills near the L & N entry points. The same goes for wherever these high voltage lines are routed. |
| bjbb:
No problem. Compliance engineers/techs do this (on purpose) several times per week or day. In fact, all EEs should probably spend a day watching a series of fault tests per on of the major safety standards early in your career, at least once. [Can be done in Asia or Europe labs, but NRTL and SCC labs in North America will not allow 'spectators']. |
| v8dave:
--- Quote from: EEEnthusiast on November 08, 2019, 02:14:36 am ---If you have any ground pours near those contacts, I would recommend to move them apart and have no ground fills near the L & N entry points. The same goes for wherever these high voltage lines are routed. --- End quote --- It does look like there is a ground pour and that is likely where the short occurred. The spacing looks OK to me too but that ground pour is a big no no around high voltage areas. Make a cutout in the ground pour next time and also use slots in the PCB to increase the creepage distance if you really must have high voltage AC on your PCB. |
| China NewBoy:
--- Quote from: nife on November 08, 2019, 12:22:46 am --- It is likely the (legally required) strain relief which is the real culprit. --- End quote --- that's right |
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