C cosmos Member Oct 22, 2004 #1 How does an AFCI work? I assume it senses current impulses; but how does it avoid false trips from appliance surges. Has anyone experienced these devices actually preventing a fire?
How does an AFCI work? I assume it senses current impulses; but how does it avoid false trips from appliance surges. Has anyone experienced these devices actually preventing a fire?
tom baker First Chief Moderator & NEC Expert Staff member Location Bremerton, Washington Occupation Master Electrician Oct 22, 2004 #2 Re: AFCI design It has microprocessor that looks for the arc signature as a wave form. It can best be explained with a drawing.
Re: AFCI design It has microprocessor that looks for the arc signature as a wave form. It can best be explained with a drawing.