Currently, GFCI outlets are required in bathrooms, kitchens, and other applications. The GFCI monitors the amount of electricity flowing out and back into the wires. Should the device detect an unbalanced electrical flow, it immediately trips open the circuit to prevent electrocution injury. A special fitting designed for connecting ground wires at the ground rod. It is also used to ground metal conduits in splice boxes.
Ground rods provide a safety ground for the electrical service.
Neutral conductors are grounded only once at the building's service entrance equipment. The ground rod often connects the water pipes and the steel structure of the building, assuring a common ground potential and eliminating electric shock hazards. Current Electric current drawn in a non-sinusoidal manner. The normal current flow is sinusoidal, 60-cycle. While the Utility supplies sinusoidal, 60-cycle voltage, some equipment, particularly electronic devices, draw harmonic current.