Green Acres (1965)

S1E9 You Can't Plug in a 2 with a 6

In Hooterville, it's time to plant, and Oliver is taken aback to see the townsfolk selecting their crops based on their physical ailments. Meanwhile, at the farm, he takes a practical approach by numbering all the electrical equipment from one to seven, hoping to prevent their old generator from overheating. Only appliances that add up to seven can be used simultaneously, but Lisa struggles to understand the system.