Electricity running through a building can be dangerous with inferior systems causing electrical fires, power outages and electrical shock. About 46,000 U.S. fires are caused each year by faulty electrical systems, according to the Consumer Product Safety Commission (CPSC).
Code - When rewiring a house, all materials and installation should adhere to the National Electrical Code. For example, the minimum size of electrical wiring required is No. 14 with 15 amp fuse protection. Some states and local governments have introduced more stringent regulations requiring No. 12 wire with a 20 amp fuse.