According to what you said “Depending on how much hot water you use in the household, we wouldn't recommend hooking up multiple appliances to this register, as you may find yourself running out of hot water. ”,the total energy providing by Controlled Load 2 circuit seems a constant. It also seems the newly-plugin appliance have priority over water heaters. So I am just wondering, what does the Controlled Load 2 exactly control? Is that the total circuit current (ampere), in other words, total po ...