/diy/ - Do It Yourself

around here they tend to look like the box on the right. they usually go before the meter.

if you have a breaker box, then you can open it and check that the 2 phases (red and black) produce 240V between them, and 120V between each phase and neutral (white). it's possible the electric company will consider that as the demarcation point, to determine whether you pay or not for the visit.