NEC Code Test Study Guide (General)

NEC Code Test Study Guide (General) What is the required protection for a receptacle installed near a sink in a kitchen? Receptacles installed within 6 feet of a sink in a kitchen must be GFCI protected to reduce the risk of electric shock. ️️ What is the minimum height for a receptacle installed in a kitchen above the countertop? A receptacle installed above a kitchen countertop must be at least 15 inches above the countertop to ensure proper accessibility. ️️ What is the minimum conductor size for a 60-amp residential service? The minimum conductor size for a 60-amp residential service is typically 8 AWG copper or 6 AWG aluminum. ️️ When should a grounding electrode conductor be used? A grounding electrode conductor should be used to connect the electrical system to a ground rod, water pipe, or other suitable ground to provide a safe path for stray electrical currents. ️️ What is the minimum clearance required for electrical wiring above a finished floor? Electrical wiring must be installed at least 6 feet above a finished floor in areas with high pedestrian traffic or to avoid damage to the wires. ️️ What is the rule for installing electrical outlets in a kitchen island? Electrical outlets in a kitchen island must be installed with GFCI protection and should be placed within easy reach of countertop work areas. ️️ What is required for a panelboard installation in a dwelling? A panelboard must be installed in a dry, accessible location, and should have at least 36 inches of working space in front of it for maintenance and operation. ️️ What is the minimum wire size for a 240V, 60-amp electric range circuit? The minimum wire size for a 240V, 60-amp electric range circuit is 6 AWG copper or 4 AWG aluminum. ️️ When is it permissible to install electrical systems in an exposed position? Electrical systems can be installed in an exposed position only if they are suitably protected from physical damage and comply with the NEC’s specific installation requirements. ️️ What is the NEC rule regarding the installation of GFCI outlets in wet locations? GFCI outlets must be installed in wet locations, such as bathrooms, kitchens, garages, and outdoor areas, to prevent electrical shock hazards. ️️ How should junction boxes be installed in ceilings? Junction boxes in ceilings must be securely mounted, easily accessible for maintenance, and not hidden behind drywall or other permanent fixtures unless an access panel is provided. ️️ What is the required depth for burying non-metallic cables under a driveway? Non-metallic cables must be buried at least 24 inches deep under a driveway to protect them from mechanical damage and ensure safety. ️️ What is the NEC requirement for using conduit in residential installations? Conduit must be used in residential installations when the wiring needs additional protection from physical damage or when required by specific code sections, such as in wet or damp locations. ️️ What is the minimum number of circuits required for a residential kitchen? A minimum of two 20-amp circuits is required for a kitchen to supply power to countertop outlets, ensuring they can handle common kitchen appliances. ️️ What is the minimum clearance for overhead electrical lines above a residential driveway? Overhead electrical lines must have a minimum clearance of 12 feet above a residential driveway to ensure safe passage for vehicles. ️️ What is the rule for grounding electrical systems in a mobile home? Electrical systems in mobile homes must be grounded to an approved ground electrode, such as a ground rod or water pipe, to ensure electrical safety. ️️ What is the NEC requirement for using extension cords in a residential dwelling? Extension cords should be used only for temporary purposes and must not be used as a substitute for permanent wiring in a residential dwelling. ️️ What is the rule for using electrical outlets in laundry rooms? Electrical outlets in laundry rooms must be GFCI protected to prevent electrical shock, especially in areas prone to water exposure. ️️ How should electrical outlets be installed in stairwells according to the NEC? Electrical outlets in stairwells must be installed with a minimum clearance of 6 feet from the floor, and the circuits must be designed to minimize the risk of electrical hazards. ️️ What is the required clearance around a generator to ensure safe operation? A generator must have at least 3 feet of clearance on all sides to ensure safe operation, proper ventilation, and access for maintenance. ️️ What is the rule for installing conductors in a crawl space? Conductors installed in a crawl space must be protected from damage and must comply with the NEC’s requirements for wiring in concealed spaces. ️️ What is the rule for the installation of smoke detectors in a multi-story building? Smoke detectors must be installed in every sleeping room, outside each sleeping area, and on each level of the building to ensure early detection of fire hazards. ️️