Ground Level; Telephone Cable Sheath; Damaged Cable Closure - Fluke C9970 User Manual

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Ground Level

Mobile homes, trailers, metal sheath buildings, ground rods and electrical
machinery all present potential electrical hazards and always require testing.
Before starting any work operation, test the skin and frame (or both frames in
the case of double wide mobile homes).
In some cases, such as when driving a ground rod, you might wear rubber
gloves during the work operation. The final test must be done with the bare
hand holding the Voltage Detector.
If a voltage is detected, the property owner should be notified for corrective
action according to the user's company procedures. Do not make contact with
the potential hazard until all hazardous voltages are removed and the
Voltage Detector indicates a safe condition.

Telephone Cable Sheath

When sheath continuity is to be interrupted for the purpose of locating plant,
locating faults, or making splices, it is necessary to test the sheath with the
Voltage Detector prior to and after opening it.

Damaged Cable Closure

If a telephone, CATV, or power pedestal closure (all closures used in joint-
buried plant) has been damaged or disturbed, (for example, knocked over or
hit by a car) or a trouble condition involving power is suspected, contact the
power company first. Once the power company completes its work, the
pedestal should be tested before any bodily contact is made. However, work
should not be done on telephone or CATV plant until the power company has
completed repairs.
If the Voltage Detector indicates a safe condition, remove the cover of the
closure and visually inspect the cable sheath ground. If the cable sheath
ground is not intact or is loose, test the cable sheath with the Voltage
Detector before performing maintenance work. If for any reason it becomes
necessary to open the bonds between telephone facilities and power or across
cable sheath openings, a temporary bond strap must be placed before the
bond is opened. If the temporary bond cannot be placed due to physical
conditions, consult with the power company representative. It may be
necessary to de-energize the power briefly for repair operations. When
temporary or permanent bonds are placed or removed, insulating gloves and
eye protection must be worn.
Electrical continuity of all bonds, including cable shield bonds in
closure or at splice locations, must be preserved during the
repair process. Until the permanent bond is installed, maintain
continuity using a temporary bond strap.
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Warning
Applications
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