K
Knobhead
One poor sod got chopped in half by trench cover plates being thrown in the air.
That was back in the 80’s, a couple of months before I started re-cabling a substation. For some strange reason we had a bit of a rethink about the job. I’ve had a bee in my bonnet ever since.
OK you can use the reasoning, what are the chances of it happening?
Quite high, the substation above one of the mates let a ¼” chequer plate drop in to the trench. There was 28x500mm cleated to the sides, fortunately it only skinned the outer serving off a few of them. Had it gone through the insulation there would have been 4x1000KVA 11/.433KV transformers feeding the fault.
Can’t say I was too happy, I had to repair the cables. A week after we’d put them in.
That was back in the 80’s, a couple of months before I started re-cabling a substation. For some strange reason we had a bit of a rethink about the job. I’ve had a bee in my bonnet ever since.
OK you can use the reasoning, what are the chances of it happening?
Quite high, the substation above one of the mates let a ¼” chequer plate drop in to the trench. There was 28x500mm cleated to the sides, fortunately it only skinned the outer serving off a few of them. Had it gone through the insulation there would have been 4x1000KVA 11/.433KV transformers feeding the fault.
Can’t say I was too happy, I had to repair the cables. A week after we’d put them in.
K
Knobhead
The distance between them is about the only saving grace.
Depending on how they are fastened in the trench has a bearing on the drops from the terminal box. If they can move in the trench then damage will be done to the terminals.
I would put them in single cleats anyway.
Depending on how they are fastened in the trench has a bearing on the drops from the terminal box. If they can move in the trench then damage will be done to the terminals.
I would put them in single cleats anyway.
Damn never seen anything like that!
Gives a good appreciation of why though!!
Gives a good appreciation of why though!!
Well I knew big cables were rated for big fault current but I never realised they could react like that!!
Though yes It would make many things seem pointless and insignificant.
Its funny I have been in a few subs and allways given the stuff a wide birth when I didnt have to be near it but think ile have to stay clear of the ladder racks to now LOL
Though yes It would make many things seem pointless and insignificant.
Its funny I have been in a few subs and allways given the stuff a wide birth when I didnt have to be near it but think ile have to stay clear of the ladder racks to now LOL
S
Silly Sausage
It shows the power of an invisible magnetic field. Awesome!
One reason why electricity is such a fascinating subject.
Similar threads
OFFICIAL SPONSORS
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
Advert
Thread Information
Advert
Thread statistics
Advert
TrueNAS JBOD Storage Server
-
-
Understanding TrueNAS JBOD Servers: A Comprehensive Guide- Started by Dan
- Replies: 8
-
