To determine the number of lighting circuits, the lighting load of the residence must be calculated. The calculations are based on the ____________________ method outlined in the National Electrical Code ®.

Fill in the blank(s) with the appropriate word(s).


volt-amperes per square foot

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Radiation freezes are accompanied by wind and can be overcome by proper site selection

Indicate whether the statement is true or false

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The ideal nail shape is:

What will be an ideal response?

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Before starting a new unit, the technician should:

A) Check the unit amp draw. B) Ohm out all electrical components. C) Check the system superheat. D) Perform both a mechanical and electrical precheck.

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What is one of the great advantages of the diode (envelope) detector?

A. 75% efficiency obtainable B. Distortion increases as amplitude decreases C. Can handle low power signals D. Simplicity

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