I agree, it isn’t but I want to know if there are loopholes cause we want as little space as possible for our run… it’s hard
Wireway needs to be accessible?
- Thread starter Tainted
- Start date
- Status
- Location
- New Jersey
- Occupation
- Journeyman Electrician
No loopholes. Just my 2 cents the vertical wireway idea is a poor one. We go through this all of the time especially in apartment building construction because the architect doesn't want give an extra square foot of space for the electrical risers that the owner can rent. We usually tell the designer that this is what we need to make it code compliant and they will have to make it work even if that means creating a shaft or other pathway that didn't exist in the original design.
Our last big apartment project was two towers one 26 floors and the other 40 floors and over 700 apartments and condos. We literally took the design drawings and threw them away and then came up with our own plan which was going to save the owners money (value engineering). They liked our idea so much that they told the design engineer we're going to do it their way not yours so get on board.
Lol! I get it. It’s hard working such little space… out of curiosity, how was the feeders ran from meter bank to the apartments? Did you have meter banks?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Yes, we ended up using 4160 volt risers throughout the building (saved lots of space) and then step-down substations to get 208Y/120. After the substations we had many "meter banks". All of the metering was electronic sub-metering not physical meters. The space saved by using less risers was eaten up by the substations.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Besides the logistics and code compliance of the wireway approach, I am just not seeing how it would save space over running MC cables....
You can put 30 CCC in a 4x4 wire trough without derating, that’s why
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
I guess this assumes that since there is no point for fire entry there is no need to firestop inside the busway?
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
So say you can put 10 100 Amp feeders in a 4x4 wireway per fill and without derating. That is 16 square inches. A 2-2-2-6 AL MC cable is 1 inch diameter. A 1-1-1-4 is 1 1/8. Even with a .5 inch space between the cables......is that extra square inch for the 10th cable really a deal breaker? Besides seems like cables have more flexibility and can be installed in dead spaces like walls.
Different scenario… hard to explain
- Status