Our house's main electrical wiring is aluminium. I have moved both our
stove and fridge plugs because we wanted them in reverse order. I kept the
old fridge and stove boxes and just extended the wiring, with copper to the
new plug locations. For the fridge wiring junction, I used copper-aluminium
rated marrettes, as well as copious amounts the anti-oxidising paste. For
the stove copper-aluminium wiring junction (8-3 wiring for the copper
extension piece, I think the aluminium is 6-3), I used big blue marrettes
that are aluminium (as told be by the surplus store salesmen I bought them
from). I could not find any copper-aluminium marrettes that were big enough
for the stove junction. I also used copious amounts of anti-oxidising
paste. I twisted each wire of each join in both the fridge and stove splice
really well with a pliers. I covered both of the junction boxes with a
steel plate so it is accessible. I hooked up the stove and fridge plug in
their new plug boxes. Works great!

Is this the way it should have been done?

any comments / suggestions / advice / tips / ideas?