ASTTBC RFPT — Fire Alarm Systems (AL) · Question
During a battery load test, what is the generally accepted minimum voltage for a 12V nominal battery before it is considered to have failed?
For a 12V nominal battery, the end-of-discharge voltage should typically not drop below 10.2V (85% of nominal) during the test. S536 references manufacturer spe
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Question: During a battery load test, what is the generally accepted minimum voltage for a 12V nominal battery before it is considered to have failed?
Answer options:
- 12.6V
- 11.5V ✅ 10.5V
- 9.0V
Correct answer: 10.5V
Explanation: For a 12V nominal battery, the end-of-discharge voltage should typically not drop below 10.2V (85% of nominal) during the test. S536 references manufacturer specs, but 85-90% is the standard performance floor.
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Question explanations
- Which of the following constitutes a system 'deficiency' rather than a 'non-conformance' to current standards?
- When a deficiency is corrected, what specific information MUST be recorded in the log?
- Which of the following would be categorized as a 'Non-Conformance' to the Installation Standard (S524) in an i
- In the event of a deficiency that renders the fire alarm system inoperative, what is the mandatory reporting r
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