Equipment Grounding Conductor: Difference between revisions
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Equipment ground is the wire that grounds metal parts to prevent them from producing a shock- by allowing a circuit breaker to trip when a faulty wire touches metal parts and current flows through the ground wire. Because the tripping occurs instantly, the equipment ground wire will not heat up and can thus be smaller than the hot wire. [[Table 250.122]] in the NEC shows the ground wire sizes for a given size of a circuit overcurrent device. | Equipment ground is the wire that grounds metal parts to prevent them from producing a shock- by allowing a circuit breaker to trip when a faulty wire touches metal parts and current flows through the ground wire. Because the tripping occurs instantly, the equipment ground wire will not heat up and can thus be smaller than the hot wire. [[Table 250.122]] in the NEC shows the ground wire sizes for a given size of a circuit overcurrent device. | ||
The Grounding Electrode Conductor | The Grounding Electrode Conductor is the wire than connects frin the main breaker box to the ground rod. Its purpose is to even the potential between the earth and the main breaker box. It does not function to trip breakers. See BS Alert at [[Ground Rod Resistance]] | ||
Revision as of 15:53, 15 September 2023
Equipment ground is the wire that grounds metal parts to prevent them from producing a shock- by allowing a circuit breaker to trip when a faulty wire touches metal parts and current flows through the ground wire. Because the tripping occurs instantly, the equipment ground wire will not heat up and can thus be smaller than the hot wire. Table 250.122 in the NEC shows the ground wire sizes for a given size of a circuit overcurrent device.
The Grounding Electrode Conductor is the wire than connects frin the main breaker box to the ground rod. Its purpose is to even the potential between the earth and the main breaker box. It does not function to trip breakers. See BS Alert at Ground Rod Resistance