A senior research engineer at UL has made the following statement.
"...For example, electrical ignition most frequently occurs as the result of Joule heating or electrical arcing. It should not be expected that those ignition scenarios representing Joule (I^2R) heating would necessary be prevented by an AFCI..."
The complete statement was published in the IAEI News. It is available at:
http://www.ul.com/regulators/afci/Dini.pdf This seams to support my point that many electrical fires are caused by poor connections and AFCIs do not detect these types of faults.
Don(resqcapt19)
