Is there a benefit to the utility company, or potentially to me, for balancing the loads across the two 120V legs in my mains power? this About page suggests some benefit, though the explanation seems suspect. I understand that, on my end, whether I am drawing 100A on one 120V leg, or 50A across both 120V legs, I am still going to be paying for 12kW.
Given that, does balancing the loads have any impact? I don't know quite enough about center-tapped transformers to say how the center tap affects transformer performance on either the high- or low-side.