the entire length is preferred because the insulation material can never become charged as it is immediately discharged through the conductive hose to the ground in the less preferred two piece construction static can build up in the non conductive portion which will lead to increased friction to the flow the conductive portion must then be of sufficient length in ensure that any static charge is dissipated before it leaves the output end of the hose the conductive portion of the hose must be grounded in order to effectively dissipate the static charges the ground is most conveniently provided through the attachment 124 to the blowing apparatus 100 which is usually of metal construction where the hose is attached and is ground potential a ground may also be easily provided by running a conductor from the hose to an attachment on a grounded object such as metal plumbing the ground may also be attached at any point along the conduction path of the hose this is less preferred because the ground attachment must be moved with the hose as it is moved and dragged through installation spaces as a test standard cellulose loose file insulation material was blown through a non conducting plastic hose according to practice of the prior art the hose was 3 inches in diameter and 100 feet long and was constructed in a conventional manner from a non conductive plastic material during installation the insulation material scattered widely as it exited the hose creating a considerable dust problem that materially.