NFPA 72 Annex D provides mandatory requirements for testing and measuring speech intelligibility of emergency communications systems.

NFPA 72 Annex D provides mandatory requirements for testing and measuring speech intelligibility of emergency communications systems.

• A. False
• B. True
• C. Not specified
• D. Sometimes

Answer: (A)

Understanding how NFPA 72 is structured helps here: the enforceable requirements are in the main body of the code, while annexes are informational and meant to guide compliance. Annex D provides guidance and practical methods for evaluating speech intelligibility, including recommended measurement approaches and interpretation tips, but it does not establish mandatory requirements. The actual mandatory testing and measurement criteria for emergency communications systems come from the main text, not the annex. So the statement is false.

Understanding how NFPA 72 is structured helps here: the enforceable requirements are in the main body of the code, while annexes are informational and meant to guide compliance. Annex D provides guidance and practical methods for evaluating speech intelligibility, including recommended measurement approaches and interpretation tips, but it does not establish mandatory requirements. The actual mandatory testing and measurement criteria for emergency communications systems come from the main text, not the annex. So the statement is false.