· learn the best practices for setting standard outlet height to ensure safety and convenience. For a typical residential installation, the standard electrical outlet height is 12 to 16 inches from the finished floor to the bottom of the device box. · according to the national electrical code (nec), outlets in most rooms should have a minimum height of 15 inches (38 cm) from the floor to the bottom of the receptacle box. · this measurement is typically set between 12 and 18 inches from the finished floor to the bottom of the electrical box or the center of the outlet face. · use this guide to learn the standard light switch and outlet heights for floors, counters, and more, plus the best ways to measure them, and what codes you may need to follow. This guide explains the common measurements , the reasons behind them, and exceptions for accessibility and style. The common light switch height is typically 48 inches from the floor to the center of the box. · these methods offer various options for measuring outlet height accurately, allowing you to ensure that your outlets are installed at the ideal height for both functionality and aesthetics in your space. Our guide covers all you need to know for optimal installation. Positioning the outlet at 12 inches above the floor is a widely accepted industry standard because it allows for easy access without the receptacle being visually intrusive. The standard height of a switch and outlet.