I want to install a video door phone (intercom) in my home, for this I have done a pre-wiring of 4 individual copper wires (normally used for home electricity) and the total length of wires is about 60 feet.
Following are the details:
Intercom Model: Panasonic VL-SW250BX Intercom Details
From main monitor to door station, required DC voltage is 20V and current is 190ma and (5V DC, 2 mA standby) according to the door station back label image Door-station-back-label
Recommended wiring by the manufacturer: CAT3 24Awg with maximum length of 350 feet
My wiring setup: Un-twisted 4 parallel individual copper wires (normally used for home
electricity)
I would like to know if my system will using these wires or if I need to change my wiring.
Update Just for information: I took the risk of installation and fortunately the system worked with a little noise in picture.
I will follow W5VO advice to put some ferrites around the power wires near the intercom
Thanks a lot for the help
Best Answer
If those two terminals that you show in your picture are the only connectors, then you should be fine. The intercom specification indicates that it is a wireless video system, so all device communication is probably happening somewhere on 2.4 GHz. Those screw terminals, and the fact that there are only two terminals, along with the power requirements being listed, are pretty good indicators that those wires carry only power. If it carries only power, then your normal house wiring will carry power just fine. If the video signal is carried by the wires, then they probably would be using the cable as network wiring and the house wiring might not work.
A caveat: The twisted wire that they specify will give you some noise rejection that the regular untwisted house wiring will not. If your intercom design is somewhat marginal, then you may have random interference. You could mitigate this by putting some ferrites around the power wires near the intercom, and possibly twisting the two power wires in the run.
Note that this is all independent of any building code requirements your building may be required to meet.