<a href=showthread.php?s=&postid=13031261#post13031261 target=_blank>Originally posted</a> by 2frosty4u
I had a reefing incident last night that I wanted to share. I had a late night and went to bed at around 1:30am. I have trouble sleeping so when I woke up at 3am it was no surprise. I took this time to make a trip to the the facilities where I have to pass my reef tank. I noticed that my moonlights were off so I started to find out why. I soon realized I had an electrical problem and the whole system had shut down. I went into the basement to start troubleshooting and found I tripped a circuit breaker in the panel, a powerbar and GFI.
Now I had to figure out what caused it all to trip. I went through very thing I could think of and still couldn't figure out what happened. Everything seemed normal. I figured I would reset the breakers slowly and see if that would give me a clue as to what happened. Well that showed me where the trouble was when I heard the sizzle, saw the smoke, and heard a pop. My main pump draws alot of power and is run by an aqua controller that is on the first floor. I use an air conditioner extension cord to power the pump in the basement. I figure that some moisture had worked its way between the pump plug and the end of the extension cord. It didn't get wiped down during routine maintenance because I never unplug them when performing this task since its wrapped in electrical tape. That little bit of moisture shorted out the prongs on the plug and popped all the breakers. When I reset the one breaker It shorted again exposing the problem when it blew a big hole into the female end of the extension cord. I plugged the pump into a regular outlet and reset the controller that also controlls other equipment and everything sprang back to life. Now all I have to do is replace the cord from the first floor. It surprised me to see that the moisture could build up between the tight connection of the two cords that were wrapped with electrical tape to keep it from accidently becoming unplugged and to protect it against accidental splashing. Live and learn, Water can get into the most unlikely places.