Hello, We market an EV charger to the N. American market. We've been contacted by major automotive OEMs for partnerships, some white labeling, etc.Recently, one decided to test a charger in chamber with an EV to CISPR12 levels, even though it's an off-board charger qualified as a residential appliance. So, while the unit passes FCC Class B emissions, some testing during EV charging shows emissions above CISPR12 limits. We and our potential customer are trying to reason out why the unit failed, and what are the implications for passing FCC Class B, while not passing CISPR12. The way I like to approach sticky issues on the edge of compliance is to identify and address the hazard posed. So, with EMC emissions some number of dB(uV) above those limits (all towards the low end of allowed conducted limits, < 200 kHz), in a typical residential installation on or near a garage, and typical usage, i.e., not closely attended for any extended length of time: what are the hazards or risks posed? Not being much of an EMC guy, I've never really had to think too much on this issue. Being a long time safety guy, I have NEVER had an issue related to EMC from which to draw experience. What say you, my colleagues? Colorado Brian
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