ECN Forum Forums Technical Discussion Electrical Theory and Applications What are all these transformers for?

A "typical" house in the US gets a 3 wire, single phase service at 120/240 volts. It will be two hot legs off a transformer with the center point tapped to ground and bonded to the system neutral (i.e., 120 each leg to ground, 240 leg to leg).
....at least that's the case in beautiful Cat Spring, Texas!