Inside the NCB is a blue dial. And the purpose of this dial is to let you simulate your body’s natural resistance"Resistance" is a fundamental concept in the field of electricity and electronics, central to understanding how electric circuits operate. It refers to the opposition that a material or a device... More.
You may have already heard of our NCB or Nuisance Current Blocker. It’s a one-of-a-kind product that we designed in collaboration with building biologist Andrew McAfee. You can use it to protect yourself from hazards like contact currentDefinition and Basic Concept Contact current refers to the electrical current that flows through a person’s body when they come into physical contact with an object that is electrically charged.... More, dirty electricityDirty Electricity, also known as electrical pollution, refers to the presence of irregularities or distortions in the normal electrical current within a wiring system. These distortions, which deviate from the... More, and electric fieldsDefinition and Nature of Electric Fields Electric fields are a fundamental aspect of electromagnetic fields, created by electric charges, either stationary or moving. These fields represent the force that electric... More while grounding.
The blue dial is a crucial part of NCB, and you have control over how much current you want your NCB to resist.
How Does this Dial Work?
The blue dial lets you control the current flow resistance between your outlet and your grounding product.
When you use things like grounding mats and bedsheets, most of the time, the current from your outlet flows to your grounding product, exposing you to contact current.
Adding resistance stops the current immediately, letting you use your grounding products more safely. But, how much current should the NCB resist?
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If you’re an expert, you can use the blue dial to set the resistance according to your specific needs.
This is also super helpful if you’re testing the amount of current flow in the body after a specific exposure.
You can simply adjust the dial to 1000-3000 Ohms, as this number represents the resistance of the skin and body when dry. This lets you exclude human subjects from your test and still gather accurate data.
Although if you’re not an expert and don’t have the equipment to test the electric fieldIn the context of electromagnetic fields (EMF), the term "field" refers to a region in space where electric and magnetic forces are exerted. An electromagnetic field is generated by electrically... More and contact current, most people will feel the best by turning the NCB dial all the way to the left. It can then be adjusted to the right as needed in the future.
The number one rule is to make sure the power"Power" in a scientific context refers to the rate at which work is done or energy is transferred. In simpler terms, it's how fast something is using energy. For example,... More is turned off around the sleeping area (removing as much of the electric field from around the bed as possible) by throwing off the breaker to that circuit.
Adjusting the Dial
To expose this dial, remove the four screws and pull off the backplate.
Once you see the blue dial, you can use any standard flat-head screwdriver to start adjusting.
Turning the dial all the way to the right, clockwise, increases the resistance to about 500,000 ohms to any current flow on the green wire, the grounding conductorThe term "conductor," in the context of electromagnetic radiation, refers to materials or substances that allow for the efficient passage of electromagnetic energy, including both electric currents and electromagnetic fields.... More. Turning it all the way to the left or counter-clockwise reduces the resistance down to about 14 ohms.
Start with the dial turned all the way to the right.
The grounding conductor is connected to the grounding prong hole at the bottom of receptacle outlets.
The green wire inside your NCB is connected to the NCB grounding hole on the face (highlighted in blue) and also the grounding prong (highlighted in yellow).
The blue dial controls the resistance between these two grounding points.
