I have an older A/C unit that uses a 6-15p plug. I want to be able to remotely control the unit with a WeMo, but it uses a 5-15r receptacle and plug. The A/C unit says its rated for 208V, and I believe the WeMo is able to support this much as well. How can I best convert the plugs to accommodate the WeMo? I'm thinking of something like this that the WeMo will plug into, that can then be plugged into the wall. What can I put between the 6-15p and the WeMo though?
Adapting a 120V controller for a 240V (208 is unlikely unless you have 3-phase power) plug seems remarkably foolish...
Quoting wikipedia: "NEMA 6 devices, while specified as 250 V, may be used for either 208 V or 240 V circuits, generally depending on whether the building has a three-phase or split-phase power supply, respectively."
To Quote Belkin, Wemo ratings: "Max 120V~/16A/60Hz/1800W"
Either educate yourself far enough to use a 240V relay with a 120V coil to control the A/C (plug the COIL into the WeMo) or forget this as baaaaaaad idea.
If the j-box has a neutral (it may or may not), you could wire up the WeMo to switch only one of the hot legs. I won't describe the details of my proposal since it involves rewiring the outlet and daisy-chaining some additional outlets and plugs, but it could be done. If this is enough info to jog your creativity, go for it. If you don't know what I'm talking about, please don't.
(As others have said, if you plug the WeMo into both hot legs, e.g. with one of those international adapters, you are likely to fry the device and/or start a fire.)