What position must the voltage regulator indicator be in before operating the regulator by-pass switch?

The voltage regulator indicator must be in the neutral position before operating the regulator bypass switch to ensure safe and effective operation. When the indicator is set to neutral, it signifies that the regulator is not actively controlling voltage, allowing the operator to safely engage or disengage the bypass switch without risking disruption to the electrical system or causing potential damage. This position acts as a precaution to prevent inadvertent switching while the regulator is engaged, which could lead to voltage instability or other electrical issues.

In contrast, positions like "On," "Automatic," or "Lowered" may indicate active regulation or different states of operation that could interfere with switching processes, leading to unsafe conditions. Therefore, utilizing the neutral setting prior to bypassing the regulator is an essential safety practice in electrical maintenance and operation.