PRAESENSA End-of-line device | PRA-EOL | en 101
Bosch Security Systems B.V. Installation manual 2019.11 | V1.00 |
10.5.3 Mounting
Most Bosch loudspeakers have a provision to mount the end‑of‑line device as a flat panel using
the holes in the mounting plate.
Caution!
When PRA-EOL devices are mounted at a height above 2m from the ground, special care
should be taken to avoid that a device falls and may hurt a person.
Caution!
For compliance to NFPA70 and CSAC22.1, the device must be mounted in a junction box.
Part of the mounting plate of the end‑of‑line device can be broken off (1) and snapped in
place as bottom plate (2+3). Then the device can be mounted outside the loudspeaker cabinet
or inside a cable junction box.
Notice!
When selecting cables and wire gauge for loudspeaker connections, take into account the
length and loudspeaker load to avoid excessive power loss. Make sure that the signal level at
the end of the loudspeaker line has not dropped with more than 2dB (this is approximately
20%), as this will also affect proper operation of the end-of-line device. Also see section Cable
type recommendations, page 23.
Notice!
The PRA-EOL shows up on a loudspeaker line as a mostly capacitive load of 30nF,
representing a reactive load of 1.7W when measured with an impedance meter at 1kHz. The
device will not dissipate this amount of power as it is reactive.
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