COAXIAL CABLE
UPPER NUT
NOTES
1 GROUNDING RING SPACER
GROUNDING RING
LOWER NUT (SEE NOTE 7)
CABLE JACKET MUST BE CUT AT PROPER LOCATION FOR GROUNDING RING
(SEE NOTES 4 AND 5)
STUFFING TUBE OR SWAGE TUBE MIL-S-24235 OR PANEL OR METAL BOX
1. THIS METHOD OF CABLE SHIELD GROUNDING APPLIES TO NEW INSTALLATIONS AND TO RETROFIT CABLES THAT CAN BE REMOVED AND REROUTED THROUGH THE GROUNDING ADAPTER.
2. FOR NEW CABLE INSTALLATION:
PRIOR TO PULLING CABLE THROUGH STUFFING TUBE, REMOVE GLAND NUT AND REPLACE WITH THE ADAPTER, LIGHTLY THREADING THE ADAPTER ONTO TOP OF TUBE, PULL CABLE THROUGH ADAPTER AND STUFFING TUBE MAKING SURE CABLE DOES NOT DAMAGE ADAPTER COMPONENTS. ADAPTER CHOSEN MUST MATCH TUBE SIZE (A,B,C,ETC.)
FOR RETROFIT INSTALLATION:
REMOVE CABLE FROM END TERMINATION AND REMOVE FROM ALL CABLE HANGERS DOWN TO THE TOP OF STUFFING TUBE. REMOVE STUFFING TUBE GLAND NUT AND SLIDE OFF OF CABLE. CHOOSE PROPER SIZE GROUNDING ADAPTER AND SLIDE DOWN OVER CABLE LIGHTLY THREADING ADAPTER INTO STUFFING TUBE IN PLACE OF GLAND NUT . REINSTALL CABLE IN HANGERS AND RECONNECT TO TERMINATING EQUIPMENT.
3. AFTER CABLE HAS BEEN PERMANENTLY INSTALLED IN PLACE AND ALL HANGERS ARE TIGHTENED, UNSCREW ADAPTER AND MOVE IT APPROXIMATELY 12 INCHES UP THE CABLE AND TAPE. ENSURE UPPER NUT AND LOWER NUT ARE THREADED LIGHTLY TOGETHER SO ADAPTER WILL MOVE FREELY ON THE CABLE.
4. PACK STUFFING TUBE AS REQUIRED, COAT THREADS OF LOWER NUT WITH ANTISEIZE COMPOUND OF A-A-59313. THEN LOWER THE ADAPTER AND THREAD ONTO STUFFING TUBE, TIGHTENING LOWER NUT AS REQUIRED FOR PACKING. UNSCREW UPPER NUT FROM LOWER NUT AND MOVE UPPER NUT AND THREE INNER COMPONENTS SEVERAL INCHES UP THE CABLE AND TAPE. MAKE CUT IN THE CABLE JACKET AT A LOCATION WHICH WILL
ENSURE THAT THE GROUND RINGS MAKE CONTACT WITH THE EXPOSED SHIELD WHEN THE LOWER AND UPPER NUTS ARE TIGHTENED.
5. REMOVE CUT SECTION OF CABLE JACKET AND APPLY A COATING OF ANTISEIZE COMPOUND OF A-A-59313 TO THE EXPOSED CABLE SHIELD AND TO THE THREADS OF THE UPPER NUT. LOWER THE UPPER NUT AND HAND TIGHTEN FIRMLY MAKING SURE THE GROUND RINGS FALL INTO THE SLOT CUT IN THE CABLE JACKET.
6. THIS TYPE OF INSTALLATION DOES NOT REQUIRE PERIODIC TIGHTENING OF THE GLAND NUT (GROUNDING ADAPTER) FOR WEATHER SEALING.
7. THE THREADS OF THE LOWER NUT SHALL BE CHOSEN TO MATE WITH STUFFING TUBES, METALLIC CONNECTOR BACKSHELLS, PANELS OR METAL BOXES DEPENDING ON THE SPECIFIC APPLICATION.
FIGURE 4. Cable shield grounding.
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