[RussWhite]

I have my Watchdog upstream of the ATS. This is also the configuration for a similar device when I had the Newell. My reasoning is this: Everything is subject to failure at some time. Should the Watchdog fail and be installed downstream of everything I no longer have the generator as a backup. Also I believe the generator power to be more transient free than some random power post to which I may be connected. YMMV