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Unread 09-06-2020, 08:36 AM   #4
tilemanct
Tile & Stone
 
Join Date: Sep 2002
Location: Northeast/Connecticut
Posts: 2,545
They aren't talking about the cable they are talking about the sensor that regulates the control. Its a fail safe issue. A quality non Chinese manufactured heating cable will last indefinitely. The sensor will also. I have had one sensor fail in 15 years of installing these systems. For the price of another sensor its cheap insurance.
Getting back to your original question/statement I always run two different cable systems and controls for main bath floor and shower. Usually two different installs. One may be in an uncoupling membrane and the shower in a mud bed. Both react to radiant heat differently. One control/system would be hard to maintain each area to a consistent temp and comfort level.
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Dave

CTEF Certified Installer
I lost my hero on 5-21-16 You will be missed. Semper Fi
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