What Are The Signs Of A Bad Ballast? Buzzing. If you hear a strange sound coming from your bulbs or light fixture, like a buzzing or humming noise, that’s often a sign your ballast is going. … Dimming or flickering. … No lights at all. … Changing colors. … Swollen casing. … Burn marks. …
Do You Need An Electrician To Change A Ballast? Yes. As a matter of fact, you do need a lock out tag out device in place for changing a ballast. … ‘An electrician is replacing the ballast on a fluorescent light. What are the signs of a bad ballast? Buzzing. If you hear a strange
What Type Of Ballasts Offer Built-in Thermal Protection? Ballasts provided with built-in thermal protection are listed by UL as Class P ballasts. Under normal conditions, the Class P ballast has a case temperature not exceeding 194°F (90°C). The thermal protector must open within 2 hours when the case temperature reaches 230°F (110°C). What is a