Corsair 1050HX + Visiontec 400W AUX PSU.
When the L3+ arrived I realized the 1050 didn't have enough cables, so I grabbed an old auxiliary power supply I used on GPU rigs.
Bitmain says you can use more then one so I figured it didn't void the warranty, I had no other choice on hand.
Yes you should use 1 supply, but it will work and has for a few months now on an L3+ the same as it worked on video cards.
*I don't sleep there and I have automatic redundant fire suppression in place.