8547.90.00 - Other

Category 8547.90.00 serves as a residual classification for insulating fittings and related conduit tubing that do not fall under the more specific subheadings of heading 8547. It encompasses insulating fittings made of materials other than ceramics (8547.10) or plastics (8547.20.00.00), provided they meet the general criteria of being for electrical machines, appliances, or equipment and are predominantly of insulating material.

This category is distinguished from its siblings by its exclusion of fittings explicitly made of ceramics or plastics. Therefore, any insulating fittings made from other materials, such as rubber, wood, or composite materials not classified as plastic, would be considered here, as long as they are designed for electrical insulation purposes and incorporate only minor metal components for assembly.

Subdividing further, 8547.90.00.10 specifically addresses "Other insulating fittings," providing a place for those not covered by the ceramic or plastic provisions. The remaining subcategories are dedicated to electrical conduit tubing and its associated joints, specifically those constructed of base metal but lined with insulating material, serving to protect electrical wiring within industrial or construction settings.