X2. Sprinklers would save so many lives in this country statistics would drop to the lowest of any nation. The fact people aren't protesting over their removal in US building codes both infuriates and flabbergasts me. I would gladly ditch my stainless steel appliances and granite counter tops for a sprinkler system.
You'd think plumbers would be pushing for resi sprinklers for safety reasons, and more work. AFCI would have as much acceptance as GFCI if they worked the way they are supposed to, and w/o nuisance trips.
Sprinkler heads are suppression, your only line of defense once a fire, of nearly any nature, has started (not gonna be effective if you are making your own biodiesel or have 55 gallon drums of magnesium powder ablaze in your basement!). Detectors are annunciation, and they help big time, but are easy to defeat/neglect.
Back on topic, I would ask the microwave mfg for a full refund as it's completely unreasonable to require the HO to use X brand electrical equipment, especially when not mentioned in the installation instructions, which imo would be illegal anyway.
AFCI need to get on the same page, have standardized trip characteristics that are ideal for detecting true faults while minimizing or eliminating false trips or, as Hal mentioned, at least make a good "THUD" sound when hitting the bottom of the dumpster. The breaker mfg could work together to design a GREAT AFCI, and I wouldnt care if the only difference was the name stamped on the case; they'd still be required and 40$ a pop, everyone gets their share, the HO gets a product that actually improves safety, and there would never be another thread of this type on the MH forum or Internet again.
Wish in one hand...
eta: can you imagine an auto forum having threads like "My Ford Focus knocks on Fram Filters", and the recommendation was to change to AC-Delco or MotorCraft? Years ago, this did happen, with Chrysler Minivans melting engines with Fram filters. Turns out Fram wasnt building their product to Chrysler's specs. The problem here is the mfg arent talking to the breaker companies, there are no specs, and the EC and end-user are caught eating it all.