Safety & Standards· Sep 22, 2026
Fire Safety: Selecting AFDD and Arc Detection for Buildings
Arc fault detection devices address series arcs that standard MCBs and RCDs may miss in aging wiring.
Series arc faults can ignite insulation without creating high current or earth leakage. AFDDs analyze waveform signatures to trip before fire spreads.
National codes increasingly recommend or require AFDDs in bedrooms and timber-frame dwellings. Combine with RCDs for comprehensive protection.
Educate end users that nuisance trips may indicate genuine loose connections worth investigating.