I think liquidtight would resist sandblast and power washing pretty well.
MC not so much.
I do a lot of sand blasting and any rubber type of coating holds up well.
Any metallic conduit would lose its galvanization with sand blasting.
-----Original Message-----
From: Craig House
Sent: Monday, July 23, 2018 3:12 PM
To: AnimalFarm Microwave Users Group
Subject: [AFMUG] Flex conduit power up water tower
In the past we have run PVC or rubberized outdoor SJOOW cord up water towers
to get power to the catwalk or our box up top. This city wants it in metal
conduit and clamped to the ladder standoffs inside the tank. This is a
weird tank. Been doing this for 14 years and it is the first time I have
had to climb 200' inside climb then climb down the outside of the tank to
get to the catwalk. Plus the inside transition from the initial 170' to the
last 30 or so is a very tight and very hard to maneuver transition. So
bending conduit to fit all this is not my thing. They say they power wash
and sand blast inside and want our power protected. OK.. So my question is
would a flexible MX type conduit do the trick? Does it need to be jacketed
or just protect from the blasting directly? I dont see any reason to go to
full conduit. It would be hard to get it up the tower, in the tower, and
bent to accommodate the tower design.
I'm thinking doing PVC for the strait drops and over the side of the tank to
the catwalk and at the difficult bends and weird junctions we will have to
adapt to liquidtight.
Has anyone got better ideas?
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