Gg - Kk
Ground: In electrical terms, ground is the safe point of discharge of unwanted static electricity. Ground represents “zero electrical potential.” When something is grounded, it’s neutral; it has no charge. Attaching a conductive floor to ground ensures that the static charges will be diverted to the earth through the conductive floor system. Typical grounds include: electrical conduit, building steel, copper bus bars and steel rods buried in the earth.
Grounded Floor: Any floor with electrically conductive properties that is attached to either electrical or earth ground. Grounding of conductive or dissipative floors is usually achieved by physically attaching the ESD flooring solution (conductive or dissipative epoxy coating, conductive or dissipative carpeting or carpet tiles, conductive or dissipative vinyl tiles or sheet goods, conductive or dissipative rubber tiles or sheet goods) to a certified ground connection using copper strips or grounding wires. The most common methods of grounding involve the combination of conductive adhesive for securing the floor and copper strips attaching the adhesive with the electrical ground connection in a building.
Ground Lead: The portion of the wrist strap, which provides flexibility of movement while completing the electrical circuit between the cuff at one end and a ground system at the other.
Ground Strap: (1) A conductor intended to provide an electrical path to ground. (2) An item used by personnel with a specified resistance, intended to provide a path to ground. Groundable point A designated connection location or assembly used on an electrostatic discharge protective material or device that is intended to accommodate electrical connection from the device to an appropriate electrical ground.
Groundable Point ESD Protective Floor Material: A point on the floor material that is intended to accommodate an electrical connection from the floor material to an appropriate electrical ground.
Grounding Resistance: The total resistance from any given point in an electrically conductive path to the grounding electrode.
Hard Ground: A connection to ground through a wire or other conductor that has very little or nearly no resistance (impedance) to ground.
HBM ESD Tester: The human body model electrostatic discharge tester.
Human Body Model: An electrostatic discharge circuit that meets the set model values by conforming to waveform criteria specified ESD-S5.1, characterizing the discharge from the fingertip of a typical human being.
Human Body Model ESD: An ESD event meeting the waveform criteria specified in this standard, approximating the discharge form the fingertip of a typical human being.
Human Body Model Electrostatic Discharge: An electrostatic discharge event meeting the waveform criteria specified in ESD S5.1, approximating the discharge from the fingertip of a typical human being.
Human Body Model Electrostatic Discharge Tester: Equipment that applies Human Body Model electrostatic discharges to a component.
Human Sensitivity: The threshold of human sensitivity to ESD is 3.5 kV.
Impedance: The total opposition (i.e., resistance or reactance) a circuit offers to the flow of alternating current. It is measured in ohms and the lower the ohmic value, the better the quality of the conductor.
Initial Test Voltage: The voltage on the test plate of the periodic verification instrument at which the discharge time test begins.
Installed Cost: The actual cost for materials and labor that also includes floor preparation, shutdown or loss of use of space, removal of old flooring and any procedures such as initial required cleaning, vapor test or vapor barrier applications.
Insulative: The property of “insulation” refers to a material’s ability to store as opposed to conduct. An insulator is the opposite of a conductor. A good example of an insulator is a stone hearth. Although the hearth stores heat from a hot fire, it can be touched without danger because the heat is retained by the hearth and not transferred to the skin (as opposed to touching the metal grille on the same fireplace). In the case of carpet construction, all fibers are insulators unless a conductive coating is applied to the external perimeter of the fibers. Insulated fibers will both generate and store static electricity. They cannot be grounded, even if a copper wire is attached to them.
Insulative Material: A material having a surface resistivity of at least 1 x 1012 ohms/square or 1 x 1011 ohm- cm volume resistivity.
Insulator: A material with high electrical resistance, (an insulator), will not conduct a charge to ground. Examples of insulators are plastic, rubber, vinyl, and wood. A practical example of an insulator is the rubber or vinyl casings around common electrical wires.
kV: A measurement of electrical voltage. The measurement stands for kilovolts or thousand of volts. Currently, the floor covering industry measures the static propensity of products by using a kV measurement.
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