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Now I'm going to show you how to wire normally closed devices in a series using a drawing.
At the top we have a terminals on the control panel: high-side and low-side.
Our green and yellow wires represent our 2-conductor 18-gauge or 2-conductor
22-gauge wire.
At the bottom,
we have three normally close devices we're going to pretend they're window sensors
in the example.
We have our silver side and our copper side;
as in the whole demonstration, copper is our low-side, and as you can see, green is
our low-side on the wires. Now, what we'll be doing is we'll be connecting our
high-side, which is our yellow wire
to both the copper and the silver wires
on each individual device.
To do this we actually need to cut the wire.
Okay, so we'll be using a Butt-Splice as we showed you in the previous video on the door
or window contacts to
connect the yellow wire to the silver side.
And then also to connect the yellow wire to the copper side.
Okay, now we have to do something with the green because we've cut it, so what
we'll do is were going to use a Butt-splice
and splice it back onto itself to keep a continuous run of the green wire.
We'll be doing the exact same thing on our second window contact; we'll be splicing
the yellow high-side wire onto the silver side and
the yellow high-side wire onto the copper side;
and using a Butt-Splice
connecting the green wire back to itself.
Now, on the third window contact,
we'll be connecting our yellow wire which is our high-side to our silver wire
which is also our high-side.
Then, we're going to be using an end-of-line resistor to connect our green wire (low-side)
to the copper wire on the last device in this series (also our low-side).
So, we're going to use a red marker to demonstrate
an end-of-line resistor.
Again, we've showed you how splice those in using a Butt-Splice in the previous video.
And so that's really it.
Just to run over it one more time,
we're going to be connecting
our yellow wire to the
high-side and low-side on
all of the devices, except the last.
And then [connecting] just to the silver wire on the last device; our green side will be
spliced back onto itself
until the last device, on which it will connect to a 2-K resistor,
running to the copper side,
which is the low-side, on the end-of-line device.
Okay, you now know how to wire normally- closed devices in a series.