Rewire
Senior Member
- Location
- Lake of the Ozarks
I realized that after I posted
1.5 or 2" emt / 41 # 10 thhn wires in a conduit
- Thread starter arnettda
- Start date
- Status
I realized that after I posted
I must have missed that somewhere
I assumed since he said lighting dimmer......
- Location
- New Jersey
- Occupation
- Journeyman Electrician
It is a lighting dimmer
jrannis
Senior Member
- Location
- Fort Lauderdale/ Miami
Hey anybody have that pic of the yellow Romex wallpaper job to show the OP as an alternate way to install that many circuits?
Fulthrotl
~Autocorrect is My Worst Enema.~
- Occupation
- E
neutrals count. sorry.
the only thing i see from a practical standpoint is that the pipe is totally
full for the derating level chosen, right? so... if there is one change to
the lighting (which is typical), you'll have to put the second conduit in
anyway.... i'm not gonna figure out which combination, cause i don't have
to pull it....
but maybe two 1 1/4" conduits, or something similar? so youhave a little wiggle room if ya have to add a pair.....
you'll have multiple pulls to get it in, unless you want to set up 41 spools, or
pull the stuff out first, then tape and figure 8 it, then untape it as you pull it
in....
sounds like fun....
scwirenut
Senior Member
- Location
- Sumter, South Carolina
why cant you set a gutter on top of the conduits and install neutral and ground bars, then bring up just one big neutral and EGC then all the individual neutrals/EGC's never leave the gutter. that also would cut down on heat because there would be very little actual current on the neutral
Individual neutrals is spec.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
That's typically the norm with dimming systems.
BryanMD
Senior Member
one of these?
Still picking my chin up off the floor. I've wallpapered with pipe before but never romex. That's awesome.
ohm
Senior Member
- Location
- Birmingham, AL
I find it hard to believe 40 circuits are all going from point "A" to point "B" and there couldn't be an advantage to running say 4 cc pairs in 3/4" C , in different directions, and protecting w/ 20A bkr.
Since the loads are dimmers (non-linear) I expect the wires are going to heat up and you would benefit from the conservative approach.
Since the loads are dimmers (non-linear) I expect the wires are going to heat up and you would benefit from the conservative approach.
CopperTone
Senior Member
- Location
- MetroWest, MA
go with the bigger conduit even if the book says you don't need it - you know hard that pull will be to actually pull?
you will be wishing you did go with the bigger conduit half way through.
the wire rack will be a mess too
good luck
you will be wishing you did go with the bigger conduit half way through.
the wire rack will be a mess too
good luck
Pfff...I could push 40 circuits down that pipe. No soap just a little spit. You should write a story about me some time.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Paul Bunyan, move over!Pfff...I could push 40 circuits down that pipe. No soap just a little spit. You should write a story about me some time.
10 CCC's (5 circuits) or an actual 10 circuits?
Is wireway an option? You can get 15 circuits (30 CCC's) in each run without derating. Additionally, without having to derate, you could use #12THHN.
120 ckts ? 15 ckts/run = 8 runs
- Location
- Massachusetts
Often dimmer racks do supply multi receptacle circuits and they often get loaded up.
Protecting 16 amp conductors at 20 amps is a bad design for this IMO.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
That may or may not be true. In the theater project I'm currently involved with it's not true. But I agree that it's a poor design and would opt for more conduits with less CCC's. That was one of the reasons that I said that the conduit I would use would be 1" or 1.25".
- Status