2, 3, as the distance (L, m) from the point of input of the lightning current into the GD along the beam of the grounding conductor
line is removed, the potential [U.sub.l] decreases in all the considered cases.
Metal-clad cable comes in several varieties, but the type you'll find at most home centers is three insulated wires (two circuit conductors and a green equipment grounding conductor
) protected by a flexible armor usually made from aluminum.
Here [I.sub.t] is the transient current flowing through the grounding conductor
, which can be defined from the Ampere's Law
In the past, many electricians did not include a neutral conductor at switch locations, and the result was the equipment grounding conductor
being used as the neutral conductor.
where D denotes diameter of the round grounding (m), d denotes diameter of the grounding conductor
(m), and [[rho].sub.E] denotes specific resistance of the soil ([ohm]m).
Electric risk factors: electrocution caused by electrical circuits powering computing equipments; electrocution while working on the computer; electrocution while repairing defects of computing equipments; electrocution while plugging computing equipments to defective plugs or plugs without grounding conductor
; electrocution by direct or indirect touch of damaged serving cables.
In order to reduce shock-related injuries, the OSHA electrical standard requires employers to provide either ground fault circuit interrupters (GFCIs) for receptacle outlets or an assured equipment grounding conductor
In most cases, the resistance from the grounding point to actual ground, such as the equipment grounding conductor
bus bar at the main service entrance to the facility, is measured using a specialized ground tester.
The PCR can be installed in the grounding conductor
between the electrical equipment and the service panel.
Use an insulated grounding conductor
to supplement the NEC-minimum raceway grounding path.
Thus, according to the measurement circuit, the resistance of the contact joint implies the transient resistance between the equipment and the grounding conductor
. However, as the operation of the GD and the measurements of the NP of the GD show, the excess of the touch voltage can occur as a result of violation of the integrity of the grounding conductor
at the boundary of the <<ground-air>>, as well as in connection with the increase in the resistance of the contact joint at the point of welding the grounding conductor
with the GD itself (see P.
1 is computed, where a line-up earthing grid with n = 3 is set as the grounding conductor