Commercial Kitchen EMT Help

Status
Not open for further replies.
C

CodyMartin2005

Member
Location
Franklin, Indiana
Occupation
Engineer
Hello,
Doing a few replacements in an old commercial kitchens. Because of structure of the building, we cannot come from above or through wall for outlet wire replacement that other work is necessitating. Our plan is to run a 3/4 EMT 90 from the current floor penetration to a rain tight bell box and then use 3/4 EMT to 3 other bell boxes about 4' apart each (each a separate circuit) using THHN wire. (Existing outlets are armor cable running on ground--we'll raise to the 12" inch mark).

The health department dictates "... install all exposed vertical and horizontal service lines one (1) inch away from the walls, ceiling and equipment and six (6) inches above the finished floor. Use approved hangers.". Locally the only EMT hangers I can find are 1/2" from the wall. Does anyone make something deeper or does anyone have an idea on an approved hanger to meet this requirement? Even with a deeper hanger I'd have to use some type of spacer to the boxes. The current trim is all 3/4" PVC which I considered making spacers out of to mount the hangers/boxes on, but want to make sure there isn't' a better solution first.
 
You could use 1-5/8" deep strut mounted to the walls, and support the conduits on the strut with strut straps. You can mount the boxes to strut also.
 
Mr. Serious said:
You could use 1-5/8" deep strut mounted to the walls, and support the conduits on the strut with strut straps. You can mount the boxes to strut also.
Click to expand...
I doubt the health department would approve that...too many places for stuff to get trapped. That is the reason for the 1" spacing...to make it easier to clean.
When you get to industrial kitchens, where they make product for sale in stores, you often find health department rules that require every thing to be stainless steel and still with the 1" spacing.
 
don_resqcapt19 said:
I doubt the health department would approve that...too many places for stuff to get trapped. That is the reason for the 1" spacing...to make it easier to clean.
When you get to industrial kitchens, where they make product for sale in stores, you often find health department rules that require every thing to be stainless steel and still with the 1" spacing.
Click to expand...
Thank you for pointing that out. I've only worked on one commercial kitchen recently, and it's the job way out in the boonies where nothing gets inspected, and I saw the plumbers had used strut for their gas lines. The electrical installation was all inside the walls on that one.
 
Thank you all. Glad to see my original thoughts weren't too far off from some of the ideas.
Going to do a solid PVC block behind the Bell Boxes and caulk them to mating surfaces (overkill, but even with a kick out their will be a small section behind the conduit that's difficult to clean). Then either fender washers/square strut washers behind the Minerallac straps. I like the simplicity of the 1/2 EMT as spacers, but that empty void cause me some concern in this environment (bacteria/harborage).
All connections will use raintight fitting, boxes mounted horizontally, and have the snap shut covers.
 
Status
Not open for further replies.
Top