Hello, I'm going to start gigging a lot more soon, and I want to make sure I'm safe. I sing and play bass, and Im concerned about faulty electric wiring and getting a deadly shock. A few questions: 1) If I play with a wireless guitar transmitter, am I fully protected from electrical hazards? Even if I'm singing with a wired Microphone? 2) How do I test a wall outlet, to ensure it's properly wired? So I know I'm not in danger. Thanks.