I'm building a suit with under 1000 RGB LEDs on addressable WS2811 strips controlled by an Arduino---specifically I'm using at most 16m of these WS2811 strips. Oh, the project is inspired by Jungle Smack's amazing creation and LED strip curtain displays, though it won't be nearly so bright.
Those strips are rated at 11.5A for 4m, and my largest segment will wind up between 4.8m and 6.4m. So I'm looking at roughly 14-18A in the two large leg arrangements. That's white at maximum brightness though. I'll write the software to keep the draw well below that most of the time, as I'm running on batteries. So that range only represents brief pulses. I'd guesstimate that 7A represents a safe bound for typical usage because even that'll kill my batteries faster than I'd like.
Any recommendations on three prong connecters for this amperage? The control wire obviously doesn't require much amperage, but running it in the same connector simplifies getting dressed.
As an aside, I suppose FastSPI requires at least 3k for this, OctoWS2811 even more. So I'll find an Arduino-like device with enough SRAM, maybe a Teensy++ 2.0 or Teensy 3.0. Apparently the FastSPI has massively improved support for WS2811, which had timing issues previously.