WarmGlass.com

In my diagram, I showed the circuit split because the original poster said that they had 40amp SSR but did not feel that there was enough margin running a 36 amp load on the 40 amp SSR. In concept at least, running 18 amps instead of 36 amps would keep the SSR slightly cooler and thus increase its r...

The important thing about thermocouple leads is that you do not splice them. Thermocouple wire has one wire made of one kind of metal and the other made of a different metal. (ref https://en.wikipedia.org/wiki/Thermocouple ) A thermocouple measures the temperature by the change in voltage generated ...

If the SSRs are heat-sinked properly and used within their rating, then their reliability should be near infinite -- certainly orders of magnitude more reliable than a mechanical relay. ref: https://media.digikey.com/pdf/Other%20Related%20Documents/Omron%20Other%20Doc/SSR%20Design%20Considerations.p...

There is some good information on paralleling Solid State Relays (SSR) here: http://www.crydom.com/en/tech/newsletters/solid%20statements%20-%20using%20ssrs%20in%20parallel%20and-or%20series.pdf basically, do not parallel SSR . A properly installed 40-amp SSR will certainly handle a 36 amp load. The...