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Thank you. To clarify - the devices are sharing a duplex receptacle. So each device has an own plug, and they fill up one of these: cooperindustries.com/content/public/en/wiring_devices/products/… Does that change your answer? (not sure on terminology of outlet vs receptacle)
Disposal is run as needed - guessing 5 times per day, < 5 seconds each time. The filtering system is only on when hot water is dispensed - so probably the same frequency
