The I-Line series of distribution panelboards is favored by many electricians for its ease and safety of adding new breakers. The panel uses a stacked bus system that protects the energized bus from accidental contact and the breaker can be easily installed using a flat blade screwdriver contacting only de-energized parts of the backplane of the panel. The design of the breakers and panel require that extra attention be paid to phase rotation, as the right (even-numbered) side of the panel will have the phases in a C-B-A configuration whereas the left (odd-numbered) side of the panel will have a more standard A-B-C arrangement.