Re: How much heat sink?
I question these failures that are happening in the first few minutes of energizing the oven, and laying blame onto the lack of a heatsink. Unless the SSR is pulsing at the begining of the heat cycle it dosn't generate much heat. Further more it takes time for the heat to migrate into the heat sink and transfer into the air. My thought is the SSR is defective if it fails in the first few minutes of use, provided its not overloaded. When a new SSR is purchased with a built in heatsink we are probally purchasing a better quality device. That old saying applys ;" You get what you pay for ", Fred
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