Hodding feeder

[DuckJordan]

personally, and i'm no code wizard I would think unless you have them tightly bundled or running through a conduit or small enclosed space there would be enough of a heat dissipation to remove the de-rating. Most looms I've ever made or come across aren't tight enough throughout to cause any heat issues. which is why they suggest to de-rate them.

 

[tjrobb]

Duck. Also not a code wizard, but I am a member of the Electrical section. From what I can remember of various discussions, you are entirely correct. The issue is removing heat from the cables. Provide breathing room and you're good. Mind you, I can't recall a definition or exact measure of how much space they would need.

 

[Wood4321]

Right, (Also, thanks to who moved the thread. I searched but didn't find this one)
But the problem is that afaik, there isn't a definition to an "acceptable" amount of looming.
I would think some sort of guideline would be helpful, for those that want to loom 4/0. (I personally hate the idea, but to each their own)

 

[DuckJordan]

Right, (Also, thanks to who moved the thread. I searched but didn't find this one)
But the problem is that afaik, there isn't a definition to an "acceptable" amount of looming.
I would think some sort of guideline would be helpful, for those that want to loom 4/0. (I personally hate the idea, but to each their own)

Because 4/0 loomed is a lot faster than 5 150' runs of 4/0 cable to pull out of a trunk. And can tell the hands (read high school kids/ volunteers/ never worked a show in their life.) To start here with the end on top going down first the pulling the box while feeding it out to here is much better than babysitting 3 hands pulling feeder.

Sent from my XT1060 using Tapatalk

 

[Wood4321]

Right, But Damn, Pulling loomed feeder isn't much faster than pulling individual cables. (at least in man hours. In my opinion)
I can put 2 stagehands on pulling 150' of feeder, and it will be done reasonably quickly. If it were loomed, I would likely need at least 4 stagehands. And then it won't lay nicely, and I have a tripping hazard as well.

But, I do see your point, if there are extra hands around, it makes sense.

 

[SteveB]

Assuming we're talking 4/0 here, and assuming the long feeders are individual runs, for good reasons, what about the short runs - 10 ft tails, 10 or 20 ft rack to rack, that do work well when bundled.

I assume you now follow what Steve Terry wrote at the beginning of the tread that the entire system, once you band part of it, gets downrated to 324 amps.

 

[Wood4321]

Of course, if I had found that thread when I originally searched, I would have probably not posted, or tacked onto the end of it.
But even the short runs require a De-rate, correct? There is nothing I have seen that states otherwise? Or did I miss it?

And, the way I read this as well, is that technically coiled feeder cable should be De-rated as well.

 

[porkchop]

My understanding is that you should de-rate. I know of more than one large entertainment company that at various times has told everyone to immediately cut off all looming on feeder cables for that exact reason. Now as far as the question of de-rating in the feeder porn pictures on Dimmer Beach Monthly I don't know, but in a way I kind of hope that idea catches on just so we start to see images of endless runs spaced evenly popping up (maybe you can tell, but I was never much for pretty feeder).

AFTER THOUGHT: Maybe the next Gaff Gun style million (or thousand) dollar idea is little 1" cable spacers