In a three-phase panel, standing in front of the equipment, the C phase is located on which side relative to the A phase?

• A. Left
• B. Front
• C. Right
• D. Back

Answer: (C)

In three-phase panels, the phases are arranged in a horizontal sequence when you face the front of the panel: A on the left, B in the middle, and C on the right. So, relative to the A phase, the C phase sits on the right side. Front or back isn’t used to describe the phase order, and left would imply a different (nonstandard) arrangement. This left-to-right A–B–C ordering is what keeps the phasing consistent and easy to identify on common power panels.