Taking wire through Concrete
Taking wire through Concrete
(OP)
I am working in a construction site and we need to fix "small watt" bulb
all over a concrete core wall as a decoration.
But we have forgot to put conduit at casting stage of core wall.
Now chipping the wall is only solution.But civil guys not allow
to chip more than 15cm,But available size of conduit is 20mm(3/4inch).
Any suggestion to solve this wiring problem.Please find attached a sample
of how "small watt lights" fit into wall.
all over a concrete core wall as a decoration.
But we have forgot to put conduit at casting stage of core wall.
Now chipping the wall is only solution.But civil guys not allow
to chip more than 15cm,But available size of conduit is 20mm(3/4inch).
Any suggestion to solve this wiring problem.Please find attached a sample
of how "small watt lights" fit into wall.





RE: Taking wire through Concrete
How are they powered? Line (Mains) voltage or are they low voltage, ie 24VDC from a common power supply?
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RE: Taking wire through Concrete
main supply voltage
RE: Taking wire through Concrete
May be you intend to say 15 mm [instead of 15 cm] it is the permitted digging depth in the concrete. In this case you may use a channel of 10 mm depth and 50 mm wide and to repair the surface with 5 mm plaster [if your cable overall diameter it is less than 10 mm ].
RE: Taking wire through Concrete
Keith Cress
kcress - http://www.flaminsystems.com
RE: Taking wire through Concrete
Of course, use listed outdoor rated cable.
Best to you,
Goober Dave
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RE: Taking wire through Concrete
I left out that we've done that a zillion times to install outdoor air and/or humidity sensors for building automation systems. Drill, poke cable, go outside and get on the ladder. Stick a fork in it, it's done.
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: Taking wire through Concrete
"Dear future generations: Please accept our apologies. We were rolling drunk on petroleum."
— Kilgore Trout (via Kurt Vonnegut)
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: Taking wire through Concrete
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com