d.
While using conduit tubing that is too large will cause no problem, using
conduit tubing that is too small is a bad idea, as this will make it difficult to
pull the wires up, as well as increasing the risk of insulation being rubbed
off the wires.
e.
Keep in mind that the ground floor needs to have AC power wiring, for the
entrance station.
3.3 Pulling the Wires
After the conduit tubing has been installed, the next step is to pull the wires
through the conduits. Here are some tips to make the process easier:
a.
Don't use excessive force when pulling the wires through the conduits. If
the wires become stuck, use a lubricant to make them easier to pull.
b.
After the wires have been pulled up the horizontal(master) conduit, tie a
knot with the wires, to keep them from falling back down the conduit.
c.
Use electrical tape to seal the exposed ends of the wires, to prevent
corrosion.
d.
If the system has a central control guard station, and it is not connected
directly to the entrance station (instead connected to the ground floor
power distribution box), then there you must run two 9C lines from the
ground floor power distribution box to the entrance station. Below is a
simple diagram illustrating the two wiring possibilities:
Wiring Possibility 1:
Two 9C Lines
9
Power
Distribution
Box
Entrance
Station
Central
Control
Guard
Station
One 3C/2V
3C Lines
Electronic Lock
