Jon did a power draw test with the LEDiva™ tonight and here are the results.
The board alone draws 11mA
8 LEDs set to the lowest brightness and white (100% RGB) draw 15mA
Same 8 LEDs set to the max brightness and white draw 300mA
So, on low, each LED draws about 0.5mA
On high, each draws about 37mA
So a strand of 60 LEDs consumes 2231mA per hour at Max brightness and the worse case scenario.
Or
30mA per hour on the lowest brightness and worse case scenario.