Electrical Codes for Home Electrical Wiring Electrical Tip The Safest Way to Test Electrical Devices and Identify Electric Wiring! The Non-Contact Electrical Tester This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. Electrical guide for wiring a house, codes, and common Wiring a House. Wiring a house or a basement in a house is something many do-it-yourselfers can tackle. It does require some basic electrical understanding and knowledge of electrical codes but if you have a little of this background you can make it happen.