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to set up some O-27 modules, but they never had any permanent
120v wiring, just a standard extension cord to the ZW
transformer. I'm in South Carolina so I was never inspected by
officials, Union or Public.
developed connectors for low voltage connections using PVC
"wood" trim boards. It has been suggested that they don't meet
"Code" for model layouts. From inspecting many under sides of
model layout I wondered what Code might be??
here is a link to the PVC terminals:
lucky and was able to use industrial DIN connectors rated for
600 volts, or telephone punch down blocks. So when a friend
asked me to help wire his layout we tried the PVC blocks. We
learned a few things, but they did work well and were easy
make corrections. Let me know what you think.
On 3/11/2020 4:20 PM, John M Wallis
the document mentioned below is intended for modular
layouts set up in public venues, it does provide most of
the rules laid out by the Fire Codes. Go to ntrak.org,
then click on “Publications” then “AppNotes”, and scroll
down to a document called “Recommended Practices for
120VAC Layout Wiring.
Can anyone point me to the electrical
codes that apply to our train layouts, the low voltage (
<12v. ) systems. By 120v. standards not much of what we
wire would pass, DCC, DC or AC. I have a copy of Practical
Electrical Wiring, based on the 1981 Code, so some things
have surely changed. For low voltage wiring the main
points are: 1) Do not put high and low voltage wires in
the same conduit or box. 2) The supply should be protected
from over current situations, 3) Thinner insulation is OK,
but should be protected from damage. Nothing about
terminals, protective boxes, etc.
I just want to know how to stay safe.
( That said, I have seen bare 120volt
terminals under layouts on tour. I think they was OK,
there was a label: "Danger, do not touch." Also one
where the 120volt lighting circuits looked just like the
track wires, you just had to follow them to check what
they were connected to. )
Recommended Practices for
120VAC Layout Wiring”.