When phasing out two circuits, what should be checked first?

When phasing out two circuits, it is crucial to check all phases for proper voltage first. This step ensures that each circuit is operating at the expected voltage levels before any further action is taken. Confirming the voltage helps identify any potential issues or discrepancies that could affect the safety and effectiveness of the circuit operation.

Checking the voltage allows linemen to ensure that both circuits are energized properly and that there are no unexpected variations that could indicate problems such as imbalances, faults, or other electrical issues. This foundational check is critical for maintaining safety and reliability during the phasing procedure.

Other options like checking the condition of the phasing sticks, clarity of the circuit markers, and proper insulation on conductors are important safety and operational checks but should be performed after the phase voltage verification. These tasks help ensure that the equipment is in good condition and that the work area is clearly marked and identified, but they do not directly verify the operational integrity of the electrical circuits like the voltage check does.