if they do knock, tell them to wait a minute, go unplug your ballast, and ask them to check again. if there was a problem and unplugging your ballast fixes it, time to join the 20th century and get a decent ballast (i know its the 21st century, but i don't want to rush anyone)
if they ask what you were doing, tell them you have a giant tesla coil you use to reanimate roadkill, when you get it right, you'll bring back Nixon, he'll fix all this shit.....i guarantee they won't ask any more questions