Safety; Lightning; Earth Ground - Bosch B9512G-E Installation Manual

Control Panels
1.2

Safety

Notice!
After system installation and any control panel programming, perform a complete system test
(a UL 864 requirement). A complete system test includes testing the control panel, all
devices, and communication destinations for proper operation.
1.2.1

Lightning

The control panel design significantly reduces the adverse effects of lightning. Take
installation precautions to further reduce these adverse effects.
Effects of lightning
Electronics involved in a direct lightning strike or near a lightning strike can show adverse
effects. When lightning strikes, several things happen:
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The effects of lightning can include trouble events, alarm events, and physical damage.
Installation precautions
To minimize the undesirable effects from lightning:
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Warranty regarding lightning
The warranty does not cover physical damage due to lightning.
1.2.2

Earth ground

To help prevent damage from electrostatic discharges or other transient electrical surges,
connect the system to earth ground before making other connections. The
earth ground terminal. Use a recommended earth ground reference, such as a grounding rod
or a cold water pipe. Make the connection using 14 AWG (1.8 mm) to 16 AWG (1.5 mm) wire.
Notice!
Do not use telephone or electrical ground
Do not use telephone or electrical ground for the earth ground connection. Do not connect
other control panel terminals to earth ground.
Caution!
Avoid electrostatic discharge
!
Always touch the earth ground connection with the
control panel.
Bosch Security Systems, Inc.
An electromagnetic wave spreads from the center point of the strike inducing high
voltages onto nearby conductors.
The voltage changes substantially on electrical grounds near the lightning strike.
High voltages are induced onto anything directly struck by lightning.
Do not run wiring outside the building.
If you install the unit in a metal building, keep the wiring at least 2 ft (0.61 m) away from
external metal surfaces. Make a proper earth ground connection.
Earth ground the unit correctly. Do not use an electrical ground or telephone ground.
Avoid running wires near telephone, data, or power lines. Locating control panel wiring at
least 2 ft (0.61 m) away helps reduce the effects of lightning.
When your data lines must cross the path of AC or other wiring, cross perpendicular to
the lines.
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2018.07 | 10 | F.01U.303.996
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