I have a customer who wants to hang a few swag lights in his backyard trees i live in phoenix not a ton of rain but bad heat that corrodes wires i really cannot think of how to do this to code let alone safely. Customer exclaims that a friend of his has some in her trees just fine... I am sure we all know that doesn't mean it is safe. I am just curios on what some of the more experienced guys think. Is this possible? If not what could be a neat enough alternative to ease the let down. Customer really has his heart set on this.