NJATC Blueprints Level III Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

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What do solid and dashed lines typically indicate in electrical drawings?

Solid lines indicate hidden elements; dashed lines indicate visible parts

Solid lines indicate visible parts; dashed lines indicate hidden elements

In electrical drawings, solid lines serve to represent features that are visible and can be directly seen in the plan. This is critical for understanding the layout of the electrical components and how they will be installed in relation to the physical structures. Dashed lines, on the other hand, are used to signify hidden elements that are not visible in the standard view. This notation is essential in providing clarity about elements that exist but may be behind walls, underground, or otherwise not observable in a straightforward manner. Correctly interpreting these line types is crucial for effectively applying the information on site and avoiding potential misinterpretations during installation or maintenance work.

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Solid lines are for temporary installations; dashed lines are for permanent installations

Solid lines indicate the main power source; dashed lines indicate backup sources

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