Is it ok to use microprocessor heat sinks on the electronic Loads because they are made of copper and have a high fan rate?
No! No! NO! Processor heat sinks do not have the ability to conduct heat away fast enough for the electronic loads. The area of the heat conduction is to small and the fans on the processors were not meant to dissipate this volume of heat. Most processor heat sinks are meant to work in the 50-60 watt range.