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NOTE: This is an unformatted excerpt from our online fire protection training library.

Power Supplies

System Components

Multiple Control Units

Many larger fire alarm installations use individual fire alarm system control units that may interface with one main control unit. For example, in a large, campus-style setting, fire alarm units may be provided in individual buildings, able to operate independently, as each is an individual system. These can all be interconnected at a main fire alarm office, if desired.

There are no requirements that a large system made up of many smaller systems has to be powered from a single primary power supply connection. In fact, good engineering practices indicate that multiple feeds are a better idea. That way a single feed cannot compromise the entire system.

Keep in mind also, as the system expands, so do the standby power requirements.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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