I have an Intermatic pool timer box that has two 120 V poles. The LINE has two pins (Pin 1 = L1, Pin 3 = L2), and the LOAD side has two pins (Pin 2 = Load 1, Pin 4 = Load 2). Currently, I have two loads, a 1/2HP pool pump motor, and a salt chlorination controller. Both loads run on 240 V, two-wire. My question is, what would happen if only one of the Load pins became energized, while the other was not?
Since the two-wire configuration delivers 240 V to the equipment, I assume nothing would happen since the other wire would be open, and therefore the circuit could not complete. On the other hand, I worry about sending 120 V to the equipment which might damage it. Please let me know what you think. Thanks!