Electrical bonding is the practice of intentionally electrically connecting all exposed metallic items not designed to carry electricity in a room or building as protection from electric shockif a failure of electrical insulation occurs all bonded metal objects in the room will have substantially the same electrical potential so that an occupant of the room cannot touch two objects with. Install a bonding jumper or.
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Hi jorge thank you for your question regarding the neutral to ground bond in the main panel.
Bonding neutral to ground in main panel. As the neutral point of an electrical supply system is often connected to earth ground ground and neutral are closely related. A panel is a solution for an overcrowded main panel and a way to avoid running multiple circuits back to the main panel. Current carried on a grounding conductor can result in objectionable or dangerous voltages appearing on equipment enclosures.
The main circuit breaker is a large breaker usually located at the top of the panel but sometimes near the bottom or along one side. Under certain conditions a conductor used to connect to a system neutral is also used for grounding earthing of equipment and structures. The short answer to your question is that the neutral to ground bond is needed to properly operate the circuit breakers.
It controls all the power of the branch circuit breakers the breakers controlling individual circuits in the panel. Wiring utility controlled meter base wiring a new main service rated panel installing the grounding system nec 2002 by warren goodrich. The square d qo 100 amp main breaker 24 space 24 circuit convertible indoor plug on neutral load center for plug on neutral breakers is ul listed for residential commercial and industrial power distribution.
Grounding and bonding typical residential underground service single familymax 200 amp. I need to explain this to a friend who is adding a panel in his new barn and plans to use ground fault breakers for the work areas that will be on the bare ground. Your explanation concerning the neutral and ground and why they are needed to be separated was really a great piece.
Where neutral bus is insulated from the enclosure. Power comes from the utility service lines flows through the electrical meter on the outside of your house and continues into the service panel. You connect the subpanel to the main panel via a double pole breaker with the proper amperage rating.
Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task. Break the connection between ground and neutral in the subpanel.
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