[Dan Wheeler]

Was at a doctors building removing the time clock for outside lighting and adding a photocell.

Was pulling wire through the conduits to get upto the main floor so I could take it outside.
After lines are pulled in I went downstairs to do final connections and close up all the junction boxes. After closer examination I discovered that some if the wires were cracking up exposing the conductors. I'm just glad I didn't get a short while pulling through the conduit with my fish tape.

 

[ponyboy]

Prepare for the flaming. You will be scolded for pushing a fish tape through a conduit with energized conductors.

 

[Dan Wheeler]

Prepare for the flaming. You will be scolded for pushing a fish tape through a conduit with energized conductors.

Lol, was thinking of that just as I was posting.

 

[oldtimer]

Prepare for the flaming. You will be scolded for pushing a fish tape through a conduit with energized conductors.

B T D T . but no T shirt ! :laughing:

 

[Semi-Ret Electrician]

OK Dan we've all made mistakes, that adds to our experience. And experience helps us not make more mistakes.

So, what's your next move?

 

[brian john]

So edit your post to make it say LOOK WHAT I FOUND TODAY as I replaced a time clock.


I have seen this before, what is your next step.

 

[drspec]

eh.....wrap it in some harbor freight tape and call it good :jester:

 

[FrunkSlammer]

Get red tape from truck, install red tape, collect money, go to liquor store and spend money.

 

[Meadow]

Every medical building seems to have some sort of problem like this. :no:

 

[Vintage Sounds]

How does that type of splitting even occur? In some places it looks like it's been ringed by someone with a pair of strippers.

 

[FrunkSlammer]

Thing it's just old and brittle and just separated as the insulation was put under tension.

Maybe..

 

[SteveBayshore]

Always use a fiberglass fish tape in conduits with existing conductors. Also whenever you could be pushing into energized equipment.

 

[brian john]

Thing it's just old and brittle and just separated as the insulation was put under tension.

Maybe..

About as close as we can guess unless there was a batch of bad insulation???

 

[ohmontherange]

OK Dan we've all made mistakes, that adds to our experience. And experience helps us not make more mistakes.

So, what's your next move?

We all make mistakes - and I will only punish those who don't learn from their mistakes.

Ever do any post mortem / failure analysis? We use them to develop M&P's (method of procedure) to ensure we don't make the same mistake in the future.

 

[Dan Wheeler]

It seemed to just a bad roll? Maybe they left it out in the weather?
All the other conductors were good and pliable.

Would like to get a fiberglass fish tape.

 

[Dan Wheeler]

I've some nasty pics before of people feeding into a live panel with a steel fish tape. Not a good combination

 

[gnuuser]

It seemed to just a bad roll? Maybe they left it out in the weather?
All the other conductors were good and pliable.

Would like to get a fiberglass fish tape.

you will find a lot of insulation like this if the conductors have exceeded temp or been exposed to too much sunlight over time.

i use a nylon tubing type fishtape with plastic tips (greenlee)
requires a bit of gentle handling but slides easily in conduit even with
previously installed conductors

 

[Celtic]

.....at least "his helper" isn't to blame. :laughing:

Learn, move on :thumbsup:

 

[Mshea]

I have never seen wire inside a panel do that. I cannot thing of any reason that should happen except the possibility the wire is a counterfeit of some kind?
I have seen platic fail like that but out of the sun and insode a panel? never. it looks like defective wire insulation to me.

 

[bkmichael65]

Plasticizer leaching out of the insulation causing it to become brittle