Probe Installation
Direct Burial Cable - Probe to Console Field Wiring
15
Direct Burial Cable - Probe to Console Field Wiring
An alternative to trenching through existing pavement is to use direct burial cable.
IMPORTANT! Maximum probe-to-console cable length is 1000 feet (305m).
Prior to installing direct burial cable with epoxy splices, consult with the local authority having jurisdiction. Use of
direct burial cable is only allowed in locations where local codes permit the use of buried cable.
The direct burial method requires grinding 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 13].
If you decide to use the direct burial method, you should order the Veeder-Root Direct Burial Cable Preparation
Kit, P/N 848100-500.
Figure 13. Example Probe Wiring Run via Direct Burial Cable
DIRECT BURIAL CABLE FIELD WIRING
When using direct burial cable for probe-to-console wiring runs, the wiring connections are the same as shown in
Figure 11 on page 14, but the sealing materials and procedure is completely different. If you are using Direct
Burial Cable you seal the field wiring connections as instructed in the Direct Burial Cable Installation Manual.
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probes\pdburial.eps
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CONCRETE
ASPHALT
EARTH
Grade
Epoxy filled
splice
enclosure
Cord grip
890-SL silicone sealant
SOF ROD backer rod
Direct burial cable
Seal-off
Rigid conduit
1
2
1
2
Dow Corning Silicone Pavement Sealant
Expanded polyethylene foam rod - trademark of
Applied-Extrusion Technologies.
Splice closure
3'' Min.
Drill oversized hole
in manhole for cable
