In some ways, Mexico is still in the 50's. Their electrical systems are a good example of this.
Example: when one of my GFCI receptacles failed in my coach, I went to what passes for a home improvement store. It also supplied all the local electrical workers. I asked for a GFCI receptacle and they had no idea what I was talking about. So I just asked for a regular duplex receptacle. That they had! But it was only a 2 prong, no ground. They said that they could order the 3 prong version but it would take a couple of weeks to get it.
Later, I talked to an expat that owns a RV Park and he took me out and showed me his main distribution panel. When I opened it up I thought I was looking at an explosion in a spaghetti factory. After digging through all the wires I realized it didn't even have a ground bus. And none of the cables had a ground wire. I also realized no one was following color code. There were both black and white conductors connected to the breakers.
Later, when I started thinking about it, all the receptacles I'd seen inside of public places were 2 prong. They don't have a ground bus. For proper grounding, it has to start at the Generators, or failing that, at least at the pole. So until the Utilities start a grounding program, don't expect much to change in this respect.
