Desco 17273 is a foot grounder full coverage, non-marrying, extra large.
This Foot Grounder provides contact with the ESD floor both under the foot's sole as well as the heel area, providing a more continuous and reliable path-to-ground. These foot grounders are easier to install than most foot grounders and are designed for use on standard shoes. The snug, reliable fit can be easily adjusted to fit the individual wearer. These foot grounders are made from non-marring three layer high visibility yellow reversible static dissipative rubber with a black conductive inner layer.
Additionally, UL listed. It is a suitable ESD footwear component in Flooring - Footwear Systems meeting ANSI/ESD S20.20 when used as the primary grounding method. It meets <3.5 x 10E7 ohms per ANSI/ESD STM 97.1 Floor Materials and Footwear-Resistance Measurement in Combination with a Person, and significantly under <100 volts tested per ANSI/ESD STM 97.2 - floor materials and footwear voltage measurement combination.
Components:
A. 0.060" thick (plus/minus 0.005) non-marring, solid, three layer, rubber material. Three layers consist of a yellow dissipative outer layer with a black conductive inner layer, and a yellow dissipative outer layer. Will noy mar floors or shoes with black marks.
B. 3/8" wide, 18" long blue nylon ribbon contains 8 electrically conductive carbon suffused fibers, reversible, may be positioned on either side of foot
Per ESD SP9.2 APPENDIX B - Foot Grounder Usage Guidance “Compliance verification should be performed prior to each use (daily, shift change, etc.). The accumulation of insulative materials may increase the foot grounder system resistance. If foot grounders are worn outside the ESD protected area testing for functionality before reentry to the ESD protected area should be considered.”
Per ANSI/ESD S20.20 Paragraph 6.2.2.2 Personnel Grounding Guidance, “ESD protective flooring, used with approved footwear, may be used as an alternative to the wrist strap system for standing operations.”
ESD Handbook TR 20.20 paragraph 5.2.3 “If the contact area between the bottom of the foot and the floor is not continuous, charge generation may occur especially when a person is walking. Heel straps must be worn on both feet to minimize the amount of time that the body of the person is isolated from ground while walking.”
Suitable for ESD footwear component in Flooring - Footwear System personnel grounding method (<3.5 x 10E7 ohms per ESD STM 97.1). Suitable for ESD footwear component in flooring - Footwear System personnel grounding method (<100 volts per ESD STM 97.2).
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