Difference between revisions of "A/C Electrical Wiring Information for North America"

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(→‎Earth Ground)
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A true [[earth ground]], as defined by the National Electrical Code, physically consists of a conductive pipe or rod driven into the earth to a minimum depth of 8 feet.
 
A true [[earth ground]], as defined by the National Electrical Code, physically consists of a conductive pipe or rod driven into the earth to a minimum depth of 8 feet.
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[[Image:trueearthground.gif]]
 
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A house ground is easy to find, all you have to do is look outside at the power feed coming in, there should be a thick bare wire coming down the side of the structure that attaches to either a steel pipe or a thick rod, driven into the ground.  The neutral is tied to earth ground for lightning protection and to provide a path for any high voltage leakage from the power company's step down transformer. The ground is tied to the neutral to provide a return path to trip the breaker in the event of a fault.  The main breaker box should be the only point where neutral/ground need to be connected, never at the outlets or other places in the electrical system.
 
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=== Install Residential Grounding Rod ===
 
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[[Image:6awgwriteforearthground.png]]
 
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Grounding rods are driven into the earth to a depth of at least 8 feet.  If rock is hit at less than 8 feet, the grounding rod can be driven at an angle but the angle cannot exceed 45 degrees.  A grounding rod can also be buried on top of rock in a trench that is 2 1/2 feet deep and 8 feet long.  Ground clamps hold the ground conductor and the grounding rod together without losing conductivity when exposed to weather and movement.  When the resistance of a single ground rod exceeds 25 ohms, an additional ground rod installed not less than 6 feet away is required.
 
  
 
== Switch and Receptacle Mounting Tips ==
 
== Switch and Receptacle Mounting Tips ==

Revision as of 16:11, 13 November 2008

Wire Color Standard

Wirecolorstandard01.png

  • White - Neutral ..... (grounded conductor, neutral conductor, neutral point) conductor with continuity to the electrical system's center tap of the power company transformer.
  • Black - Hot 110v / 120v ..... (positive, live wire) not grounded, the active wire which is most likely to electrocute a person. This is the dangerous wire!
  • Bare - Ground ..... (grounding wire, earth ground) a conductor with continuity to earth, may be bare or identified insulated wire of green or having green stripes.
  • Red - Hot 110v / 120v

Electricity flows along the black "live" wire, feeding whatever is required and then returns along the white "neutral" wire to its local transformer. The flow can be interrupted by a switch installed on the black "live" wire for most common household applications.

Wirecolorstandard02.png

Standard Wire

StandardWireXXXX.jpg

Earth Ground

A true earth ground, as defined by the National Electrical Code, physically consists of a conductive pipe or rod driven into the earth to a minimum depth of 8 feet.

Switch and Receptacle Mounting Tips

The height from the floor for the following:

  • Electrical Outlet is 12"
  • Light Switch is 48"
  • Thermostat is 60"

 

 

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