Quote:
Originally Posted by spark1  As long as both the controller and the timer are using the same circuit, your original plan would work. Even if they both call for the fan to come on,as long as they are on the same circuit,you'll be ok. Different circuits,and you'd have a direct short.  |
No. Not a given. If the 2 controlers have the same phasing, it can create a direct short also. (of both fired at the same time. And L and N need to be in sync.)
And if the first controler fired, it can easily backfeed into the second and possibly create issues (hence my Q about triac or relay output on the controllers)
And different circuits doesn't mean direct short. Different phases *might* be a direct short.