also, speaking of fire hazards, this guys does a teardown and analysis of those 25 amp SSRs they sell super cheap and makes a pretty good argument that they are probably no good over 10 amps:
For all you people that are hooking up SSRs to mechanical relay inputs, beware you are likely to burn your house down if you do not lower the cycle time to below a second. Mechanical relays are driven in long intervals to reduce mechanical wear from switching back and forth. SSRs like quick...