I have a odd situation with my Christmas lights. I have two Intermatic
timers (T101)side-by-side in the garage each with its own 15 amp
breaker via a 3-way wire. One controls a plug which the house
Christmas lights are plugged into, no problems with this circuit. The
second timer has another plug outside under a Blue Spruce to light the
tree up with Christmas lights as well. What I found out by tracing
back the wires is that this second timer is also connected to the
front porch light switch which is on third and separate circuit. When
the front porch light switch is on, power is fed to the second timer
circuit even when the timer is open (not on), turning on the trees
lights on. It all works fine, unless the timer is off and all the
lights are on, i.e. Christmas lights on the tree and the lights on the
third circuit in the house and on the porch are on. But everything
works ok when the timer is on. I was wondering if this wiring design
is to code?