Chicago and EMT

[don_resqcapt19]

Not trying to drag up the "conduit as ground/green wire" debate, but anyone know how much you see or dont see that in chicagoland EMT?

Typically dwelling units do not have an EGC of the wire type.

 

[don_resqcapt19]

But disadvantage is with raceway you don't always eliminate a switch or outlet (eliminate the box altogether not just remove device and put on a blank cover) as easily as you might with NM cable. Not that it is impossible but may be able to fish something easily with NM cable but may need to open up the wall/ceiling more to do similar with raceway.

The Chicago code permits AC, MC and FMC for "fishing" applications.

 

[jim dungar]

Looks like even then, it was limited to work in existing dwelling units, and not permitted for new construction.

That Chicago Code section implies part of the 'new construction' issue was due to damage being done to the exposed NM, by other trades on the project.

 

[480sparky]

That Chicago Code section implies part of the 'new construction' issue was due to damage being done to the exposed NM, by other trades on the project.

If that's the case, NM shouldn't exist today.

 

[mikeames]

Anyone in the trade, union or otherwise, who can't bend EMT by the end of their second year shouldn't be in the trade.

I am sure we agree bending pipe and doing it well are worlds apart. Anybody can do offsets and 90s maybe even a saddle, but then the art is straight, neat, uniform in a decent amount of time.

 

[480sparky]

I am sure we agree bending pipe and doing it well are worlds apart. Anybody can do offsets and 90s maybe even a saddle, but then the art is straight, neat, uniform in a decent amount of time.

I wasn't referring to using a triple-nickel to make twenty concentric 90s in GRS.... all with radial couplers. But even a first-year cubby should be capable of simple back-to-backs, stub ups and a 30° offsets in ½ and ¾ EMT.

 

[mikeames]

No? I thought all 1st years should have that down. Extra credit if they bend 3" GRS by hand..... I wont be the one to correct them.

 

[LarryFine]

No? I thought all 1st years should have that down. Extra credit if they bend 3" GRS by hand..... I wont be the one to correct them.

Not quite, but I did learn how to bend offsets in 2" GRS over truck tires early on.

 

[hillbilly1]

I wasn't referring to using a triple-nickel to make twenty concentric 90s in GRS.... all with radial couplers. But even a first-year cubby should be capable of simple back-to-backs, stub ups and a 30° offsets in ½ and ¾ EMT.

I had a helper that didn't have enough a** on him to bend 3/4" emt! LOL!

 

[tortuga]

When is the part of this thread where people post dazzling pics of Chicago houses roughed-in with EMT?

 

[LarryFine]

When is the part of this thread where people post dazzling pics of Chicago houses roughed-in with EMT?

There aren't that many:

Redirect Notice

www.google.com

I also found these:

Redirect Notice

www.google.com

 

[electrofelon]

Ya know I was just thinking "doing a house in EMT wouldnt be so bad and maybe kind fun" until I saw that picture larry posted and saw a can and thought about piping up a bunch of cans....

 

[tortuga]

@jfindustries you guys rock.

 

[kwired]

View attachment 2552406

@jfindustries you guys rock.

See that black pipe in the photo and was wondering if it is gas piping? Do they allow CSST there? I would be on board with not allowing CSST other then maybe for short flexible lengths at an appliance. Though if that is what it is I thought you couldn't have concealed fittings unless they are welded fittings.

 

[mikeames]

See that black pipe in the photo and was wondering if it is gas piping? Do they allow CSST there? I would be on board with not allowing CSST other then maybe for short flexible lengths at an appliance. Though if that is what it is I thought you couldn't have concealed fittings unless they are welded fittings.

I live in MD and just sold a house that was built in 2005. It had black pipe for gas and there were concealed threaded fittings. Not sure what that means but the house passed inspection twice. The gas meter had to be replaced and so the gas co changed it and had to do visual inspection upon turning it back on.

 

[grich]

See that black pipe in the photo and was wondering if it is gas piping? Do they allow CSST there? I would be on board with not allowing CSST other then maybe for short flexible lengths at an appliance. Though if that is what it is I thought you couldn't have concealed fittings unless they are welded fittings.

Don't worry...the orange sprinkler pipes will put out any fires left over after the explosion...

 

[kwired]

I live in MD and just sold a house that was built in 2005. It had black pipe for gas and there were concealed threaded fittings. Not sure what that means but the house passed inspection twice. The gas meter had to be replaced and so the gas co changed it and had to do visual inspection upon turning it back on.

May have been a gas company requirement and not a gas code thing. I remember one time one of their guys telling me they can't have concealed threaded fittings, must be welded if concealed.

 

[don_resqcapt19]

...I would be on board with not allowing CSST other then maybe for short flexible lengths at an appliance. ...

The wall thickness for listed gas appliance flexible connections is much thicker than CSST. CSST is not permitted for flexible connections.

 

[hbiss]

May have been a gas company requirement and not a gas code thing. I remember one time one of their guys telling me they can't have concealed threaded fittings, must be welded if concealed.

Here I believe fittings must be welded above a certain pressure not normally found in residential.

-Hal

 

[kwired]

The wall thickness for listed gas appliance flexible connections is much thicker than CSST. CSST is not permitted for flexible connections.

I kind of figured those appliance connectors were not built to same specifications as the other tubing was. For one thing they would normally see more physical abuse as well as movement that would be deemed normal.