I tried a simple tester on my home wires, and found some open grounds... They seem like they worked perfectly fine, but could pose a threat to life and limb. Others might want to check what they use at home, and don't assume that it's fine if the equipment lights up and works. Also watch for Hot/Neutral reverse...it can be a killer if you have an amp in one outlet and microphone/PA in a second one...and one is reversed... (Tester is small, inexpensive unit from Radio Shack-good insurance!)
Just a "heads-up"...
Dave
Just a "heads-up"...
Dave