Electrician question?

[fpkjr]

Originally Posted by BORIStheBLADE

The new use of the arc faults is a good thing for new homes.It will help with fires and stuff. I got a chance to play with them in some high end homes.

I wouldn't dare try to put them in a house wired already.

Boris,
As I undrestand the NEC the use of the Arc Fault was brought about because tofthe wiring in older homes!
While I feel it's a great idea to use them in new home construction I think the statement I quoted would cause more harm.
This is a FYI post -
Check this quote from Mike Holt!
"Studies have shown that over 60 percent of fires are from causes in the fixed wiring, switches, receptacle outlets and lighting fixtures that are part of the fixed electrical system of a residence." In other words, AFCI's are focused on detecting arcing and preventing fires in an area where the risk is significant.

Arcing faults often occur in damaged or deteriorated wires and cords. Some causes of damaged and deteriorated wiring include:

puncturing of wire insulation from picture hanging or cable staples,
poorly installed outlets or switches,
cords caught in doors or under furniture,
furniture pushed against plugs in an outlet,
natural aging,
and cord exposure to heat vents and sunlight."

Several years ago in a yearend class we spent a good deal of time on these
Sorry for dragging this up
With respect
Frank