DISCLAIMER: HVAC School is NOT an official OSHA safety training resource! Although we provide safety tips in good faith, our website is not a substitute for safety training from an authorized OSHA training source.   When most people think about respiratory devices, their minds probably jump to soldiers wearing gas masks in warfare, hazardous waste […]

This article was inspired by a recent short podcast episode covering a common issue among leaders, creatives, and technicians who try new things. You can listen to that podcast HERE. Maybe you’ve had a time in your life where you felt like a pretender. You’re really not as knowledgeable as people think, and they wouldn’t […]

Connecting more than one wire on or under a single lug or connection point is called “double lugging,” and it is ONLY allowed in line voltage wiring under one condition, according to NEC 110.14: If the terminal, lug, or connector is specifically rated for more than one wire In the case of a conductor splice, […]