Originally Posted by starry night
Jim, I wonder if your suspicion about total wattage might be valid.
I have not had any issue with the inside-the-transformer Intermatics that I have used in two years. But my systems are all LED and I have never done any projects of more than 120 watts or so.
I just re-read my own post and thought I would clarify (probably no one cares)
that I have done larger jobs but with multiple 150-watt transformers in different locations.