All good points, it will be close to the limit but in real practice I am hoping it will be okay. Why derate by 40% for single phase? Wouldn't it just be 2/3 the 3 phase value? Not saying you're wrong, I'm just curious. Similarly, why the 40% derate for continuous duty? I wish I could track down a proper Shindengen spec sheet for this model. I will need to do some careful evaluation of the mounting location but I think I can fab something up in a location that provides ample air flow. If I'm running at higher rpms/speeds then there will be at least 1 m/s of airflow and this is when I'm most likely to have an overcharge situation. I bet my RS in combined DC only form puts out less than 200w. BD and some other companies seem to derate when you combine stator outputs, RS doesn't seem to mention it. In any case, I bought the FH008 units so I will find out! If they work, then this is a very cost effective solution for me.