ECN Forum Forums Photo Discussion Forums Photos for General Discussion Is there a better way??

Scott don't most of the conductors pass straight through the wireway?

If most of them just pass through I doubt you have more than 30 conductors in the cross section of the wire way.

This should get some discussion going.

Bob

If there is any rolling stock [forklifts!] within a 4-mile radius, concrete/pipe bollards could save some death and destruction.

Er, article 110 working-space illumination OK?

{There are some serious manhours in those wall sections.}




[This message has been edited by Bjarney (edited 04-17-2004).]

The panels under the transformers don't have any conduits coming out of the top of the gutter. This tells me the lay flat over to one of the left or right where the conduits are. It's real easy to get more than 30 conductors that way.

The gutter in the bottom picture looks like it's probably seriously crowded.

A solution??

I racked my brain for a while and all I could come up with is this: spend a lot of time meticulously planning and laying out the conduits so they more or less land in their respective panel(s) right below.

Having done little commercial work, this is a new one on me. I learn something new everyday here.

Peter

Ain't that the truth. Here's one done in a similar fashion, by a different company.





A 42 circuit panel, full up, will typically have from 42 to 60 to even (a rare, extreme case) 88 wires exiting. They all have to go somewhere.

I love intriguing posts like this one!

Excellant pictures Scott !!

Nice pictures, Electure. I can barely imagine the amount of work put into that. For me it's interesting to see this setup as it looks entirely different from what it would look like here in Scandinavia. (Metal conduit isn't used and consequently wireways of the type in the pictures don't exist.)

I'm curious: Are there multiple compartments inside large wireways to limit the number of wires that run together? It seems the risk for mistakes would be significant and the derating factor be terrible with a single compartment.

{Sorry for the possible threadjack}

Is the room included in the photos a classified location up to 18" AFF, or are these seal offs simply satisfying the boundary requirements?

If it is in a classified location, is that fan identified for use in the area?


BTW: Great looking pipework.

The room is about 50'x200'in the first pic, and yes, it's Class1 Div2 up to 18". It's part of a Toyota dealership's body shop.
We've no control over what the mechanics plug into the recps. (at 48"AFF) once the job's done. I can say, though, that these fans are used in many other dealer's garages.

The second pic is in an entrance to another part of the service garage. Bollard's?? We suggested removeable bollards. The sleeves are even in the floor, just under the concrete. The customer wouldn't have it, though, and the inspector didn't demand them. Scary thought.

Bob, On subject of labelling, there is another violation! The label on the wireway should be visible after installation, not turned inside for "asthetic purposes" Good Eye!

Getting the crew to plan their work, as Nick did in his installation, would be like getting a tiger to change his stripes to spots like a leopard.

What about using 18x24 boxes above the panels instead of the wireway, and nippling them together? (This is the only "solution" I've been able to come up with so far)

What do you think?...S

are you not breaking the code by having conductors from multiple sources within the same raceway?