There are many benefits to balancing the loads of the three legs of power in your electrical panel and here’s why. A balanced load in an electrical panel means that the current flowing through one leg is equal to the amount of current flowing through the other. The closer these numbers are, the more balanced the load. When the amperage is split up equally, the neutral current is cancelled out.
But when the current is placed unevenly across the legs, the neutral must carry the entire load.
Your utility company meter measures power demand in peaks. That way, the utility company knows just how much power you may use on a high demand day, say when it’s really hot and you have many air conditioners and fans running. They are responsible for supplying you your peak demand of power. As your power demand increases, so does your electrical rate. So if you are running three air conditioners that draw 10 amps each and they are on the same leg of power, your demand is 30 amps on one leg.
But if you place them on separate legs of power, now your demand is only 10 amps, get it?
This balancing of loads can be achieved by removing the electrical panel cover, carefully placing an amp probe over each of the “hot” legs, and recording the amperage draw while the panel is loaded heavily. This means turn on air conditioners, heaters, freezers, refrigerators, TV’s, etc… that are normally running throughout the day and night. See if the loads on the legs are close to the same amount, or if they are completely different. If they are very different values, we call this unbalanced loads. This condition will cost you more on your utility bill.