milemaker13
Senior Member
- Location
- Suburbs of Chicago
So, just want to hear some comments on the subject. While the guys were cutting concrete for a new machine pad, they cut thru seven pvc pipes containing everything from low volt fire signals to 277 lighting loads and lots of 110 in between.
So when they cut, a 1200 amp breaker tripped, but this is ahead of a 200a main and also indivudal breakers.
That breaker was reset and it held in. Most of the 110 breakers were tripped too, but not all. The most worrisome was the 277v line that did not trip. Just sat in the pipe burning away. WTF?
So, in steel pipe it would have most likely tripped... but what about the PVC?
As I type, and think it over..... Im still confused I guess... And of course I've got everyone and their brother in the hole asking dumb questions. Thats not helpful:huh:
FYI- We're all fine and its now under control. Just looking to hear some comments. Thanks guys!
So when they cut, a 1200 amp breaker tripped, but this is ahead of a 200a main and also indivudal breakers.
That breaker was reset and it held in. Most of the 110 breakers were tripped too, but not all. The most worrisome was the 277v line that did not trip. Just sat in the pipe burning away. WTF?
So, in steel pipe it would have most likely tripped... but what about the PVC?
As I type, and think it over..... Im still confused I guess... And of course I've got everyone and their brother in the hole asking dumb questions. Thats not helpful:huh:
FYI- We're all fine and its now under control. Just looking to hear some comments. Thanks guys!