TFM 12 Test Questions & Answers | 70 Questions with 100% Correct Answers | Latest Update | Verified

TFM 12 Test Questions & Answers | 70 Questions with 100% Correct Answers | Latest Update | Verified What does PLFA stand for? - Power Limited Fire Alarm What does NPLFA stand for? - Non-Power Limited Fire Alarm What material must NPLFA circuit conductors be made from? - Solid or stranded copper What is a single station detector? - Battery powered smoke detectors that do not communicate off premises. What is a multiple station detector? - Mains powered smoke detectors with battery backup that are linked together, so that if one unit initiates, alarms in all detectors will sound. They do not communicate off premises. How frequently must household single and multiple station detectors be inspected and tested? - In accordance with the manufacturers recommendations, at least monthly How frequently must household fire alarm systems be inspected and tested? - At least every 3 years, by a qualified service technician. What does 'restorable' mean? - The detector can be 'restored' or 'reused' after it has initiated an alarm. What size conductors are permitted? - Size 18AWG and 16AWG What is used to protect transformers or other devices supplied from power-supply conductors? - An overcurrent device not rated over 20 Amperes.