Saw a new one last weekend: a dryer hooked up with 14/3, connected to a 2-pole 20 amp Homeline. Apparently this hookup was done by one of the tenants in the building. Evidently the breaker hasn't tripped, or is totally defective. How much do dryers draw anyway?
This house also has the whole first floor apartment on one 15 amp circuit. With the a/c running I measured 14 to 15 amps with my amprobe on that circuit around dinnertime. The breaker and romex were nice and warm.
I told my friend (whose mom owns the house) not to be surprised when he comes home from work some night and the fire trucks are at the house.