The grounded conductor (white) is terminated in the panelboard on the grounded busbar. The green screw is the main bonding jumper connecting the grounded busbar to the enclosure. A threaded hub (upper ...

Where conductors are installed in parallel in the same raceway or cable tray, a single equipment grounding conductor is permitted [250.122 (F)]. In the 2011 NEC, 250.122 (F) was changed to help ...

This grounding conductor is permitted to pass through one or more sub-panels without connection to the panel board grounding terminal as permitted in Section 384-2010.

This installation used a grounding method developed in the 1940s by Underwriters Laboratories engineer Herbert G. Ufer; the method bears his name. Ufer grounding consists of attaching the grounding ...

The impedance of the ground conductor can be seen as the pathway that a faulted current will have to take to reach the earth ground system. When insulation fails, a short circuit occurs.

Using an undersized conductor for neutral and ground prevents the SPD from functioning properly. For grounding, nothing smaller than a 4/0 should be used; but, in a large facility with a 250 MCM cable ...