|
Repugnance while re-labelling disconnects |
|
|
|
|
|
Thursday, 01 October 2009 |
 Michael writes: Today I was re-labelling some disconnects. One particular disconnect for a small capacitor bank was dead cold, where normally it should have been warm, or even hot.
 I discovered that two of the three fuses were blown. I tested all three phase and everything seemed fine. I replaced the fuses, turned on the power and, after a few seconds, a loud spark came flying out.
 I turned off the power and disconnected the conduit, then opened up the bank (which is a one-time thing), and this is what I found:
 Most of the capacitors making up the bank had shorted out, causing the capacitors to blow holes from the inside out. This situation was caused by a lack of maintenance on the capacitors.
(Photos courtesy Michael Kelly of The Electrical Department Co.)
See a good horror lately? Send photos of the horrors you’ve seen on the job to
This e-mail address is being protected from spam bots, you need JavaScript enabled to view it
and include a description.
|
