T&T: smart wye

[Larry N. Brown]

Well, since my thread on swivels and shackles is about to play out and we're
in the process of flogging fire extinguishers and autopilots to death, figured
I'd open a brand new, fresh can of worms.

I wired my boat for 240. Heavy loads- washer/dryer, scuba compressor, ro
watermaker, home depot water heater-- run on 240. Light loads--
air-conditioners, raw water pumps and the usual sundry items are balanced out
over the 2 120 legs.

If I'm in a non-50 amp marina, I'll just have to use the genset if I need it.
Meanwhile, I bought a 50 - 2 x 30 "smart" splitter. Supposedly if I plug it
into 1 30 dock outlet, the other leg won't be hot.

Question is- just how smart is it? Will it out smart me? Say there's one 30 a
outlet on the dock. I know my reefer and aft air-conditioner are on leg x. I
plug the splitter into my boat and the 30 a cable into leg x and plug into the
dock box. Will the brain decide that I shouldn't get 30 120 into the boat? I
know it's supposed to keep me from electrocuting myself. Do I have to have 2
30 a circuits for the thing to work?

Regards,

Larry and Teri
M/V Cigano, 47' Prairie Sundeck Cruiser
Lying: Covington, LA
N 30 26.7
W 90 07.1