[123electric]

For a high end residential setting what looks better? 6x6 or 8x8 trough/wireway? Keep in mind this is only used for 12 and 14 branch ckts above panels to allow cleaner access back into panels through 2" x 6" gal nipples into top of panels so 20 percent fill or derating isn't an issue.
All panels are flipped with lugs and feeders coming into a wireway/trough running under all panels then into a mdp.
I think the 6x6 trough looks a little less industrial however less space to get your hands in.
8x8 def has a wow factor but a bit over kill. Of course sanded plywood painted dark gray first.

 

[Going_Commando]

Meh, I think 6x6 would be fine. It is just romex. You going to do cabinet grade plywood, or actually sand plywood?

 

[123electric]

We buy sanded sheets 3/4" of plywood from Home Depot. Just under $40 per sheet

 

[123electric]

Yes just two rows of 1/2" holes into to troff 1.5" on center. Second row in between first row. The Greenlee LS-50 battery powered punch is amazing. Also with punch no burs that you get when using a uni bit. Nicer on rx jackets

 

[Semi-Ret Electrician]

For a high end residential setting what looks better? 6x6 or 8x8 trough/wireway? Keep in mind this is only used for 12 and 14 branch ckts above panels to allow cleaner access back into panels through 2" x 6" gal nipples into top of panels so 20 percent fill or derating isn't an issue.
All panels are flipped with lugs and feeders coming into a wireway/trough running under all panels then into a mdp.
I think the 6x6 trough looks a little less industrial however less space to get your hands in.
8x8 def has a wow factor but a bit over kill. Of course sanded plywood painted dark gray first.

I've done 4x4 above a new basement sub-panel. There was only about a foot of wire below the floor joists to work with, much of it AL.

I even brought the aux gutter down to the panel with a Tee so I didn't have to worry about derating wire or conduit fill.

All the grounds were landed in the gutter, which didn't even have to be listed.

Even the inspector was impressed.

Go for it:thumbsup:

 

[CADPoint]

Electrical work is not art, many wish it wasn't something, But in most cases it's required.

Wireway troughs can be trickie. People generally don't understand nor comply with sizing per the application. I'm just saying!

Frankly I'm thinking of Grouped sevices here!

It's not a case where 20% is called out in respects to a nipple. it's 60%.

My belief is that where we go wrong on this type of install is to account for conduits sizing but miss on the exact amount of all the wires that are in a wireway/trough!

Running a 15/30 panel that's one thing, combining mutli 15/30's; first why bother and secondly that changes things.

The math wasn't presented.

 

[ponyboy]

I don't think it's practical for resi settings. As soon as you put 15 romexs in it you're shot

 

[123electric]

We are way under the 20 percent fill. And 192 wires as per rigid at 60 percent fill, that would never happen as there is a 2" nipple left and right of each panel leaving the panel.

 

[123electric]

I know what your saying about the not more than 30 conductor rule. That's why we use divider/ end caps in trough too

 

[123electric]

We section off between every 15 rx to avoid that too

 

[123electric]

More work in high end res work but beautiful results.

 

[ponyboy]

And what does that cap do in relation to ampacity in real life? Not a thing. Some of the ways to get around the code are just as ridiculous as the code itself

 

[123electric]

It keeps each section separate as to comply with 30 conductor rule. I'm certainly not concerned with real ampacity here as all heavy geo thermal AC compressor loads go directly to the mdp. Just lighting loads

 

[te12co2w]

We section off between every 15 rx to avoid that too

Section off with what? Do the manufacturers make something, or do you make your own? Out of what? Flat piece of metal would be hard to keep in place.

 

[123electric]

Trough end caps

 

[sparky402]

I want to see a pic. Ive never came across this

 

[123electric]

Sorry I don't post pics on this site.

 

[Cow]

What's the difference if you describe putting end caps in the middle of a gutter to circumvent code rules or you just post a pic of it?

Would that make it any less hokey?:no:

 

[Celtic]

Sorry I don't post pics on this site.

What site do you post pics on?

 

[ponyboy]

So is it generally agreed upon that sectioning off parts of the same gutter starts you back at zero for your cccs? I never heard of this practice before