When voltage is absent at L1 and N, what should a troubleshooter check for?

When voltage is absent at L1 and N, it is essential for a troubleshooter to consider various potential issues in the electrical circuit. The situation indicates that power is not reaching the components, which can stem from multiple causes.

One critical area to check is the presence of disconnects in the circuit. If there is a disconnect present—such as a switch turned off or a breaker that has tripped—this would prevent voltage from being present at L1 and N. Verifying the state of any disconnects is crucial because they directly control the flow of electricity.

Another area to examine is the possibility of a bad fuse. If the fuse is blown or damaged, it would interrupt the electrical circuit, causing the absence of voltage at L1 and N. Replacing a blown fuse or repairing circuit integrity is an important part of troubleshooting.

Additionally, faulty sensors can sometimes be the issue, but detecting a lack of voltage typically suggests that the problem lies upstream in the power supply pathway rather than with sensors themselves.

Considering all these points, the correct response indicates that a thorough examination should involve checking for faulty sensors, disconnects, and bad fuses, as all could be contributing factors to the absence of voltage. Therefore, the answer encompasses the need to explore