COMPLIANCE INFO_1999-2005 - Laserfiche WebLink

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Direct Burial Cable An alternative to trenching through existing pavement is to use direct burial cable. Direct burial cable can be installed in hazardous locations where fuel and vapor may be present. It is specifically designed for certain uses only. It must be installed in the correct manner. Installing the cable incorrectly or without proper precautions can result in fire,explosion,electrical shock, hazardous conditions as well as equipment damage or inaccurate inventory control. Perform the following: 1. Use direct burial cable for intrinsically safe wiring only. Do not use for power wiring. 2. Do not share conduit for intrinsically safe probes and sensors with wiring of any other type or from any other system. 3. Maintain a physical separation of at least 2 inches between probe and sensor wiring to all other wiring. 4. When cutting trenches for direct burial cable ensure that you do j not cut through existing fuel or wiring systems.Obtain as much site information as possible before cutting the trench. 5. When grinding trenches in existing pavement for direct burial cables,wear approved breathing and hearing protection,goggles, and gloves. Before considering the direct burial method,check to be sure that direct burial practices are acceptable at this location.The direct burial method requires grinding using an abrasive wheel,a 1/4"to 3/8"wide by 1-1/4"deep groove(adding 1/4"of depth for each additional cable)in the pavement surface,laying Veeder-Root supplied direct burial cable down in the bottom of the groove,laying an expanded polyethylene foam backer rod over the cable(s),and then a placing a 1/4"to 1/2"bead of Veeder- Root recommended silicone sealant over the backer rod to within a minimum of 3/8" below the pavement surface [see Figure 7]. If You Decide Upon The Direct Burial Method,Consult The Direct Burial Cable Q')s Installation Manual For Detailed Installation Instructions[Veeder-Root No. 576013-8581. 27