National Electrical Code Questions and Answers | Latest Version | 2024/2025 | Complete & Verified

National Electrical Code Questions and Answers | Latest Version | 2024/2025 | Complete & Verified What is the maximum load percentage allowed on a branch circuit to prevent overloading? 80%. What type of wiring method is typically required in damp locations? Type NM-B or approved moisture-resistant wiring. What is the required clearance between a rooftop and an electrical service mast? At least 3 feet. What is the purpose of an arc fault circuit interrupter (AFCI)? To protect against electrical fires caused by arc faults. What is the minimum ampacity rating for a service entrance conductor for a single-family home? 100 amps. 2 What is the minimum height for electrical receptacles above a kitchen countertop? 20 inches. What is the minimum height for an overhead service drop above a residential driveway? 12 feet. What is the required depth for burying underground service conductors in residential areas? 24 inches. What is the color of the grounding conductor in a typical electrical system? Green or bare copper. What is the maximum allowable voltage drop for a branch circuit? 3%. What is the primary purpose of a ground fault circuit interrupter (GFCI)? To protect people from electric shock. 3 What is the minimum clearance required between a panelboard and the ground? 6.5 feet. What is the required amperage rating for a residential kitchen small appliance circuit? 20 amps. What is the maximum distance between receptacle outlets in a residential dwelling? 12 feet. What is the required separation between a pool and an outdoor electrical receptacle? At least 6 feet. What is the required spacing for supports on horizontal electrical conduit? 10 feet. What is the minimum size for a copper grounding electrode conductor for a 200-amp service? 4 AWG. 4 What is the standard voltage for most residential electrical systems in the United States? 120/240 volts.