Alliance AL-4017/AL-4617 Control Panel
Installation Manual
6
Wiring
Keep all panel wiring well away from other wiring. Avoid parallel wire runs with other wires. Where parallel
wire are unavoidable, keep wires a minimum of 2 in. (5 cm) apart or in EMT. We recommend that you wire
Alliance system components that use direct wire transformers into a dedicated circuit breaker and you plug
those that use plug-in transformers into an unswitched outlet.
To correctly earth ground your application, follow these procedures:
One enclosure with several devices.
All devices designed for the system have chassis ground
connections via metal studs to the metal enclosure. Take care that these metal studs make good
connections to the enclosure (beware of paint). The earth connection of every piece of equipment in
the system can be used for connecting the shielding of shielded cables. If a device, such as a keypad, is
placed in a plastic enclosure, the earth lug of the device does not have to be connected.
Panels in a single building.
If several enclosures or devices are connected to earth ground in one
building, the safety earth ground of this building has to be checked by a licensed contractor.
Panels in multiple buildings.
If the wiring extends to separated buildings, more than one common earth
ground system will be used. Use isolator/repeaters to isolate the system bus. In this way the system is
protected against variations in earth potential.
WARNING:
Each control panel or device mounted in a metal enclosure, must have its enclosure connected to earth
ground. Correct earth ground procedure must be followed.
Summary of Contents for Alliance AL-4017
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