I have an old ballast fluorescent (3 foot tube), and when it's on (even with the tube removed), the circuit breaker in the fusebox (MCB) buzzes loudly. I've put my lighting onto the computer's UPS, and now that buzzes too. How can a ballast cause this?

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Why do people point to their wrist when asking for the time, but don't point to their crotch when asking where the bathroom is?