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Label the line feed wire with the number of the breaker.
Use a separate breaker for powering the electronics.
This prevents a problem circuit from disabling the whole
system.
Note that the 120 Vac feed is protected by a circuit
breaker mounted to be accessible when the door is on
the panel while the 277VAC feed is protected by self
resetting thermal fuses. The rotary switch also has a
position for OFF if the system needs to be de-powered.
Did we mention it is a good idea to get the phone line
installed early! It may not get used much so it could be
placed in parallel with a fax machine and plugged in as
necessary.
1
120 Vac
Circuit
Breaker
277Vac
Thermal
Fuses
INPUT Selector
Switch
Label Wires
Connect Phone Line
Write Phone #
on Phone Plate
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