a first embodiment is shown in fig1 . a tubular shield 2 made of conductive - wire mesh is wrapped around a cable 4 bundle , and is secured by fastener 3 with hooks 6a . fig2 a shows an unrolled segment of the cable sheath 1 . the fastener 3 is inserted into the sleeve - like shield 2 and is pressed against one side so the hooks 6a protrude , as indicated in fig2 b . thus prepared , the sheath 1 may be wrapped around a cable 4 bundle , as shown in fig1 . the hooks 6a of the fastener 3 hold the ends of the shield 2 together forming a closed conductive surface . the cable sheath 1 can be used many ways , some of which are shown in fig3 a through 4 . in fig4 the cable sheath 1 is spirally wound around a cable 4 bundle where the circumference of the bundle exceeds the width of the cable sheath 1 . fig5 a through 6b show some variations on the basic cable sheath 1 . a fastener 3 is used at each end of the shield 2 in fig5 a and 5b . an additional piece 5 of shield 2 is used , in fig5 b , to bridge the gap because the cable 4 bundle circumference exceeds the cable sheath 1 width . the variations in fig6 a and 6b are similar to the one in fig4 except that the fastener 3 is not inserted into the shield 2 , but is wound separately . in fig6 a the fastener 3 is under the shield 2 ; in fig6 b the shield 2 is under the fastener 3 . a second embodiment of the cable sheath 1a , shown in fig7 a and 7b uses a flat , single - sided fastener 3a . in a third embodiment of the cable sheath 1b , shown in fig8 a , the fastener 3b spreads throughout the shield 2 . a fourth embodiment cable sheath 1c , shown in fig8 b , is like the third embodiment cable sheath 1b except the hooks 6a protrude from both sides of the fastener 3c . a fifth embodiment of the cable sheath 1d , shown in fig1 , uses the flexible guard 7 shown separately in fig9 . a cable sheath 1 , for instance the first embodiment cable sheath 1 , is attached inside the guard 7 at a connection site 7a . the connection site 7a is located close to the opening of the guard 7 so the cable sheath 1 wraps around the cable 4 bundle when the guard 7 is installed . the shield 2 need not be entirely mesh . a sixth embodiment of the cable sheath 1e , shown in fig1 , has conductive mesh tubes 2a at both sides of a conductive sheet 2b . the fastener 3 may be inserted into either tube 2a . the resulting cable sheath 1e may be used as the other embodiments are used . if the fastener 3 and its hooks 6a are conductive , they form part of the closed conductive surface , thus improving the overall conductivity of the closed surface . fig1 shows the first embodiment cable sheath 1 taking advantage of a conductive fastener 3d . although this description has focused on a simple hook 6a , many different hook designs may be used for the fastener 3 . four designs are shown in fig1 : a simple hook 6a , a double hook 6b , a t - hook 6c , and a knob hook 6d . other designs could be used as well . the preceding description also focuses on the use of conductive mesh ; however , other conductive materials , e . g ., steel wool or expanded metal , could be used for the shield 2 as long as they can be securely retained by the hooks 6a of the fastener 3 . this description merely describes some embodiments of the claims without exhausting all of the possible variations ; the scope of this invention is limited only by the following claims .