Graeme38
Electrical
- Apr 30, 2002
- 27
I would be interested to know if the US fire alarm system regulations require a minimum noise levels.
In the UK the requirement is 65dB minimum in any normally occupied room or 5dB above ambient noise levels. For sleeping accommodation it is 75dB minimum.
We are also required to provide a minimum of two sounder circuits in the event of a circuit failure of one.
I recently carried out an installation in South America, and I found the system used (Siemens) supplied from the US to be fairly limited in this department. The system could only drive a limited number of sounders
In the UK the requirement is 65dB minimum in any normally occupied room or 5dB above ambient noise levels. For sleeping accommodation it is 75dB minimum.
We are also required to provide a minimum of two sounder circuits in the event of a circuit failure of one.
I recently carried out an installation in South America, and I found the system used (Siemens) supplied from the US to be fairly limited in this department. The system could only drive a limited number of sounders