26105-17 Introduction to the National Electric Code Review Questions

26105-17 Introduction to the National Electric Code Review Questions Which word or phrase best describes the NEC requirements for the installation of electrical systems? ️️Minimum What is the required height for an electrical receptacle in a commercial kitchen? In a commercial kitchen, the minimum height for a receptacle is 15 inches above the countertop, ensuring that it is easily accessible while meeting safety standards. ️️ What is the NEC rule for the protection of outdoor electrical outlets? Outdoor electrical outlets must be protected by a GFCI (Ground Fault Circuit Interrupter) and housed in weatherproof enclosures to prevent electrical shock risks in wet environments. ️️ What is the rule for bonding and grounding the metal parts of a water heater? The metal parts of an electric water heater must be properly bonded to the electrical system’s ground to ensure safety and minimize electrical shock hazards. ️️ What is the minimum depth for burying electrical cables in a residential yard? Electrical cables must be buried at least 24 inches deep in a residential yard unless additional protection, such as conduit, is used. ️️ What is required for an outdoor circuit that supplies power to a pool pump? An outdoor circuit supplying power to a pool pump must be GFCI protected and use weather-resistant wiring and equipment to ensure safety. ️️ What is the NEC requirement for outlets in a bedroom? The NEC requires at least two outlets to be installed in a bedroom to ensure sufficient access to electrical power. ️️ What is the rule for the installation of electrical outlets on walls in hallways? In hallways, outlets must be installed no more than 10 feet apart to ensure convenience and access to electricity for all uses. ️️ What is the minimum size for the grounding conductor in a 400-amp service panel? The minimum size for the grounding conductor in a 400-amp service panel is typically 2 AWG copper or 1 AWG aluminum, depending on local codes. ️️ What is the NEC requirement for the protection of electrical wiring in an attic? Electrical wiring in an attic must be properly protected from physical damage, typically using conduit or running the wires through walls or ceilings that prevent accidental damage. ️️ What is the minimum number of circuits required for a laundry room? A laundry room must have at least one 20-amp circuit for general power, and a separate 20-amp circuit for any specific appliances such as a washer or dryer. ️️ What is the rule for grounding a generator to ensure safe operation? A generator must be properly grounded to the building’s electrical system or to an approved ground rod, to ensure safety during operation and prevent electric shock. ️️ What is the NEC requirement for light fixtures in damp locations, such as bathrooms? Light fixtures installed in damp locations like bathrooms must be rated for wet or damp conditions and be equipped with appropriate moisture-resistant covers. ️️ What is the rule for the installation of service panels in a garage? A service panel in a garage must be mounted at least 5 feet above the floor to protect it from accidental damage and ensure safe access. ️️ What is the NEC requirement for electrical bonding of an air conditioning unit? The metal frame and all exposed conductive parts of an air conditioning unit must be bonded to the building’s grounding system to ensure safety. ️️ What is the required protection for wiring in high-traffic areas like hallways? Wiring in high-traffic areas must be installed in conduit or other protective methods to minimize the risk of damage or exposed wires. ️️ What is the rule for the installation of an electrical outlet near a sink in a bathroom? Electrical outlets located within 3 feet of a sink in a bathroom must be GFCI protected to prevent electrical shock risks in wet environments. ️️ How should electrical cables be run through walls to minimize damage? Electrical cables must be run through walls using appropriate conduit or cable protection where necessary to prevent damage from nails, screws, or other objects. ️️ What is the rule for the installation of a pool light according to the NEC? Pool lights must be installed at least 5 feet away from the water’s edge and connected to a GFCI protected circuit to ensure safety and reduce the risk of electrical hazards. ️️ What is the minimum height for a receptacle in a garage? The minimum height for a receptacle in a garage is 18 inches above the floor to avoid damage from vehicles or other equipment. ️️ What is the NEC requirement for grounding an electrical system in a new home? In a new home, the electrical system must be grounded to an approved grounding electrode system, such as a ground rod, metal water pipe, or ground plate. ️️ What is the rule for circuit breaker placement in a panelboard? Circuit breakers in a panelboard must be installed in the correct slots according to the breaker’s size and type to prevent overloads and ensure the safety of the electrical system. ️️ What is the rule for grounding receptacles in an older home?