Archive | electrical drawings

USA Common Power Sources

    Power Sources   Power supplies common in the US Here are some common power supplies for residential and commercial buildings. In the feild as an installer the term 277/480 is referred to as high voltage and 120/240/208 as low voltage. Generally speaking that is. 48 volts and below (more…) Join our community to […]

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J-box Mounting Heights

J-box Mounting Heights I forgot to mention in the video to make sure that you Mark your boxes with the addition or subtraction of the 2 inches if you Mark from a top or the bottom. In this video, I’ll show you where to get your mounting heights for your (more…)

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panel symbols

Wiring Diagrams and symbols

Understanding wiring diagrams and symbols… is one of the first steps in becoming an electrician.You will need to know how to read and understand wiring diagrams and symbol in any path of electrical field work. Electrical estimators of course need to know how to read and interpret blueprints,schematic and wiring (more…)

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