National Electrical Code grounding and bonding requirements tested on electrician licensing exams, beyond the general exam basics deck.
36 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the purpose of equipment grounding?
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To provide a low-impedance path for fault current back to the source to safely clear overcurrent protective devices.- What conductor must be used for equipment grounding in most circuits?
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Copper or aluminum equipment grounding conductor, which can be bare, insulated, or covered.- For a 20-amp circuit, what is the minimum size equipment grounding conductor?
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12 AWG copper or 10 AWG aluminum.- For a 60-amp circuit, what is the minimum size equipment grounding conductor?
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10 AWG copper or 8 AWG aluminum.- For a 200-amp service, what is the minimum size equipment grounding conductor?
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2 AWG copper or 1 AWG aluminum.- What is bonding?
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Connecting conductive parts to ensure electrical continuity and low impedance for fault current.- What must be bonded together in a kitchen sink area with a dishwasher?
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The sink and any accessible conductive parts, including the dishwasher frame and water lines.- What is the maximum distance from a ground rod to a water meter or shutoff?
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The ground rod must be bonded to the water pipe within 5 feet of the meter or main shutoff.- When a main water shutoff or meter is installed, what must be bonded across it?
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A bonding conductor to maintain electrical continuity in the grounding path.- What size bonding conductor is required to bond a water pipe serving as a grounding electrode?
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The same size as the equipment grounding conductor but not larger than 1/0 AWG copper or 3/0 AWG aluminum.- For a gas pipe entering a building, when must it be bonded?
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It must be bonded to the service equipment grounding conductor or the grounding electrode conductor within 6 feet of the point where it enters.- What is the primary difference between a main grounding electrode and a bonding conductor?
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Grounding electrodes establish the reference to earth; bonding conductors connect conductive parts to maintain continuity.- What is an effective grounding path?
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A permanent, continuous, low-impedance conductive path that can safely carry fault current.- May copper and aluminum be in direct contact in a grounding conductor installation?
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No, they must be separated by an insulating material or protected in a corrosion-resistant environment to prevent galvanic corrosion.- What is the purpose of a ground-fault circuit interrupter (GFCI)?
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To disconnect power when it detects a ground fault current to prevent electrical shock.
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