My old lead tech swore you should never pull power on a panel without tagging the breaker first, and I laughed at him for 2 months until a Tuesday service call in Macon cost me $400 | Alarm System Installers

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My old lead tech swore you should never pull power on a panel without tagging the breaker first, and I laughed at him for 2 months until a Tuesday service call in Macon cost me $400 | Alarm System Installers - Pinecone Attack