What about connection devices that are designed for larger aluminum
wiring ... but there happens to be a version of them that accepts
smaller wires? There's a whole bunch of such connectors shown in this
catalog: www.nsipolaris.com/pdf/connectors.pdf . I'm assuming some of
these would normally be found inside of a breaker panel to attach the
aluminum wire comming in from outside. As well as used to make
connections for larger aluminum wire that supplies ovens, etc.
However, a lot of these connectors accept 14 awg wire too, therefore,
would using such connectors be safer than using wirenuts. After all
the safety of wirenuts is not agreed upon by all, but how about the
safety of such connectors?

Thanks,
Harry