I wish someone would evaluate the euro-style "choc-block" connector for these applications. The "choc-block" is essentially an insulated terminal strip, with a separate screw holding each wire in place. I suspact they would work out far better than even the purple wire nuts!
Nope, most definitely not!!! The screws only give a very small contact surface and will loosen by time, just like device screws. Besides, choc blocks don't provide any corrosion protection. I've once in my electrical career seen alum wire in Austria, and it was spliced using choc blocks. To this day I keep one of the crisp choc blocks on my desk as reminder!
In Germany, mainly Eastern Germany where alum wiring is a big issue they onlly allow crimp splices or purple wire nuts, it's basically the only application for wire nuts there.
So my conclusion: Never use choc blocks for alum wiring! Otherwise I love them!!!
