CPSC, ESFI Warn Consumers About Electrical Hazards In The Home "Inspect and Protect!" Campaign Encourages Homeowners to Safeguard Homes
(underlining is mine - maybe I just added 2+2+2 and got 6)
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This summer, CPSC and ESFI are encouraging homeowners to: 1) have an electrical inspection conducted for homes 40 years and older, for homes 10 years and older with major renovations or new appliances added, or that have been resold; 2) learn the potential hazards posed by aluminum wiring systems and contact CPSC if your home is among the two million built with aluminum wiring between the late 1960s and early 1970s; and 3) consider installing arc fault circuit interrupters in place of ordinary circuit breakers, especially if your home is over 40 years old. AFCIs are new technology designed to prevent electrical fires by sensing unseen electrical arcing. AFCIs are particularly important where wiring may have degraded with age."
http://www.cpsc.gov/LIBRARY/FOIA/FOI...FCImeeting.pdf
Slide on page 22 of 38, Enhanced Protection, Currently available AFCIs provide protection beyond standard breakers and fuses: aluminum wiring (then other things listed)