Many people are concerned that bonding the steel rebar in concrete may lead to cracking of the concrete due to thermal heating. It is a very counterintuitive concept, but it’s actually the exact opposite.
Ground Fault Protection systems are very sophisticated devices, often with many variable settings to “Dial-In” the specific requirements needed for your site. Also, the reliability of the GFP systems depends on many factors beyond the proper settings on the device.
Since the very first National Electric Code (NEC) NFPA 70 was written, over a hundred years ago, there has been a requirement for completely disconnecting the power coming into a building. This is called a “Service Disconnect” by the NEC
While it is not known exactly how many lives have been saved since the introduction of GFCI protection in the 1971 National Electrical Code, there is no doubt that the number of electrocutions in America has dropped dramatically ever since.