Thailand Outlets Electrical

Dual power supply of an additional line of Thailand, 220 Volts, L is gray, not black?
ie. Air conditioning wiring is connected to a compensation in the safety switch connected to an outlet above a wall outlet, the air conditioning works as it should. A second security disconnect is placed in a socket and a ground wire that connects the safety switch one seconds goes directly to the ground outside. Question ??????? How Security is cutting the union of two to create additional streams directly to the line (dual power)?
You'll have to check your lines through a voltmeter to determine that. I doubt that the dual power. You will have a wiring diagram and email so that I can fully understand what you mean.
Click for more information!