You are troubleshooting a dimmer control where the lamp remains ON even after disconnecting the neutral wire. Which of the following could be the likely cause of this issue?
A)Improper AC connections
B)The dimmer's Thyristor is bad
C)Dimmer control is faulty
D)Improper Min or Max setting on dimmer

Question

Quizplus · Accepted Answer

In this case, the dimmer's Thyristor is bad.
Key Takeaway: Dimmer controls can be harder to troubleshoot because there are several different types. In this case, if the lamp remains on even after disconnecting the neutral wire, the dimmer's Thyristor is faulty. Replace the dimmer control. Thyristors act as bi-stable switches, conducting when their gate receives a current pulse, and continue to conduct for as long as they are forward biased.

You Are Troubleshooting a Dimmer Control Where the Lamp Remains