Cable Trenching for Surveillance

By Brian Rhodes, Published on Jan 21, 2019

Trenching cable for surveillance is surprisingly complex. While using shovels, picks, and hoes is not advanced technology, the proper planning, construction, and execution of trenched cable runs is underestimated.

** **** ****, ** look ** *** **** practices ** ********* ***** for ************:

  • **** ******* & ****** Route ********
  • ****** ***** & **** Requirements
  • ******* ************ ***** ****** Specifications
  • *** ***** ****** ******* for *********
  • ******* ********* *****

**********

***** ********* ** * substantial *****, ******** * myriad ** *********** *** design **************.

**** **** ******* ** a ***** ******* - low ******* *** **** cable *********. ** *******, high ******* ***** *****, water/sewage, ** ******* ********* are *********** ************ ********* licensed ********* **** **** fitters, ************, *** ******* engineers *** ********* ** this ****.  *** ******** requiring *********** **** ***** applications, *** ******** ******* company ********* ****** ** consulted.

Site ******

*** **** ****** ******** is *** ****** *** shortest, *** ********* ***** factors:

  • **** ******: *** ***** ****** is *** ****** ** soft, *** ** ******** of ******, ********* ****. Buried ***** ***** **** surrounding ** *** *******. Even ***** **** ** prone ** **** ******** and ***** **** ******** 'air-gaps' **** *** **** groundwater ** ***** **** time. 
  • **** ***********: ******* ****** *********** trench ****** ** ******* or *** *** **** is *****, ***** ****, or ******* ***** ** roots. ****** ********** *** be ******** ** **** rocks ***, *** *********** boring *** ** ******** by **** ******.
  • **** ** ***: *** ****** *** no ******** ************ **** tree ********, *********, ** even *****-*****. *****-***** ****** and ******* ************* *** be * ******* **** a ****** ** *** under ***** ******. 
  • ***** ****: *** ******* ***** that *** ****** ******* can ****** ***** ********* method ** ****. *** example, ** ***** ***** the ****** ******* ****** or ***** ** '*****-*****', that ********** ******** ****-******* for *** *** * few **** ***** ****.
  • **** ********: ***** ** * big ***** ** *****. Not **** *** *********/********** shorting ***** **** ****** age, ** ****** ******* ice *** ***** *******. Water ** **** *********** for ******* ******* ********. When ******** ********, ******** standing ***** ** **** ground ***** ****** ** ideal, **** ** ** means * ****** *****/******:

**** ******** *** '****** path', ******** ******** *********** utilities, **********/ ********* *******, erosion-prone ******* *****, *** foliage such ** *****, ******, or ****** ** * ********. In **** *****, **** means ****** ** ******** path ******* *** ******:

** ***** ** ********* 'other *********' ** *** area, ******** ******** ************ ** ** ****** in *******. **** ******* is ********* **** ** the *********, *** ******* scheduled * *** **** prior ** ******** ******. These ******** **** ***** with ***** ***** ** spray ***** ** ******* identify ***** ******** ********* are ****.

******* ***** ***** *** more ***** ** *************** interference *** **** *********** bend *****, ** ****** design **** *********** *** 'cable-specific' ***********. *** *******,**** ***** *** * strict **** ******,*** ** * ****** is ****** **** ***** bends ** ****** **** changes, ******** *** ******. 

** **** *****, ********* must ** ******* ***** paved *****. ** **** case, ******* ******** *** breaking ** *** ** frequently *********. *** **** must ********** ********* *** labor ** ********, *** proper *********, ********** *****, safety *******, *** ********* repairs **** ** ********. Where ********, ********* ** open **** ** *****, however *** ********** ** running ***** ******** ******** can ******* ***** ****.

Trench *****

*** **** ** * need ** **** ** cable *** *** ** trench? *** ****** ** the ** *** **** parts ** *** *****, is ***** ** *** (National ********** ****), **** called**** **. *** **** **** ******** guidelines ** ****** ***** high-voltage *********, *** ***** it ** *** '**** cable' ********, ** ********** a **** ********* ******** than **** ******** *** provides **** ******* **********.

***** ********** *******:

  • ****** ****** ****** ***** be ****** * ***** of ****** ­**** (**) inches. ****** ****** ***** cable ** ********* ****** as '****** ****** *****' or '** - *********** Service' ** *** ***** jacket, *** ********* *** a ******* ***** ** grey ******* ****** *********** the ***** ******.
  • ***** ***** ******* ** tubing ***** ** ****** a ***** ** *** (6) ******. *** ******* *** ************ ********* ******** **** ****** ** the ********** ******* *****.
  • ************ ***** ******* ***** be ****** * ***** of *** (*) ******  
  • ***** *********** ******* (***) approved *** ****** ****** shall ** ****** * total ** ******** (**) inches  
  • * ******* ****/****** ***** be ********* ** *** trench ***** ****** ****** wire ** *********. ****** inches ***** *** *********** installation.
  • ***** ***** ** ******** bedded **** ****. ****-**** containing ***** ** ********* should *** ** **** to ****-**** *** ******.

*** ***** ***** ** excerpted **** ***/ **** 70 *** ***** ******* 'cover *****' (**: *********) requirements *** *** **** of *****, ************ ****, and ******* ** ******** types. *** **** ****** surveillance ************ *** *********** in ***:

************ ****** ** *** type ** ******* ** shielding *** **** *****, and *** ****** ***** do *** ******* *** conduit ****. *** *******, if *" *** **** is ****, *** ****** depth ****** ** ** less **** **" **** (or, *" ******* ******** + **" **** ****) The *** ********* "****** bedding **** ****", ******* at * ***** ** ~2" - *". **** bedding ***** **** **** depth ** *** ******. 

***** ***** ******* ******* dirt *** ** ****** at ********* ***** **** direct ****** *****. ** many *****, ********** ****** 'direct ******' ***** ******* to ***** *** **** of ********** *******, *** they ** *** ******** the **** ** **********, deeper ******* ** ********* required **** ***** ****** burial *****. 

*** ** *** **** overlooked ******* ** ******* cable ** ******* *** trench **** ****. **** tape ** *** **** the *****, ********** ******* a *** ****** ** back-fill ****** ***** ** six inches ** *******. **** **** helps ***** ******* **** being *** ** ****** digging ** ******* ******* an ********* ** *** soil. ***** *** ********* conductive ** *** ******* marking ******** **** ****** lines:

Lightning *********

* ****** ************* ***** buried ****** ***** ** its *************** ** ********* strikes. *******, **** *********** cable ***** ** ************* *********/***** ******************* ** **** **** of *** ****** *****. Cloud-to-ground ********* ** ******, and ********** ****** *** still ******** ** **** buried *****. **** *** inside ***** ***** *******, the ***** ****** ***** to ** ******** ********. 

**** ***** ***** **** fiber ***** ** *** require ***** ********** *** cannot ** ******* ** lighting. *******, ******** ******* is **** ******** ********** of **** ** *** inside, *** ********* ****** may ***** ** ******** by ****. 

Trench ********* *******

****** ******* *****:**** *****, ******* * trench ******** ****** ***** and **** ***** **** shovels, ********, *** ****.

***** *********** ****, **** digging ** ** ************* **** of *********, *** ****** every ****** ******* ******** some ******* *** ** humans. **** ******* * trench **** **** ********* or ****** * ***** space, *** **** *** least ********* ****** ** manual *****.

**** ****** ****:*******, **** ********, ******* productivity ** ************* ********* with ********* *********. *** trenching ** ******** ******* & ****** (******* ** 1 ****/ **" *****), a '**** ******' **** trenching **** ** ******.

*********** * *****, ******** saw ******** ** *** a **** ****** **** the ****, * **** behind **** *** * skilled ******** *** *** over * **** ** trench ** * *******. This ********* *** ** commonly ****** ** **** construction ****** ******* *** less **** $*** *** day, *********** ** * job-site with * ****** ***** *******, and ******* ******** ** an ******** **** ******* experience.

********/*********** ******: *** *****, **** costly, *** **** ********* method ** ********* ** found ** * *************/*********** ****** *******.

** **** *************, ******** do *** **** **** to ** ***/***, *** the *********** ***** *** insert ******* ** ****** directly **** *** ****. For ********* **** ****** cable ****, ** ********** unavoidable ********* **** ********, the ********* ******** *** quickly ***** ********* ** feet ** ***** ***********. 

*******, **** *** ****** to ****, ******* ******** training **********, *** *** by ***** ** *******, and *** ********* ** transport ** ***-*****. ** some *****, *** ******* must ** ***** ********* with ****** ********* ***** PTO (*****-****-***) ***** ***********, like *** **** ** the *******, ******* ********* special ********. ****** *** amount ** ****** ****** is ******** ** *****/**********, it ** ******* *** cost ********* ** **** using ****.

Trenching ****

*** ***** ***** ** trenching ******, *** ** affected ** **** ****, cable/conduit ******, *** ***** method ** **** ** dig **. *** **** trench ********, * **** trench ** *** **** a '**** ******' ******* using *** ** ***** workers, *** *** ** semi ***** ******* ** buried. ******** ********, ******* for **** '***** ************ trench' ***** ******* $** and $** *** ****.

********* **** ******** ** sub ******* **** *** quickly ******** ****. *** the **** ** '********' trenching *******, *** ********* like *** ******** *****, soil ********** **** ****** sand ** ****, *** raceway ********* *** ****** or ****** *** ***** to ~$*** ** ~$*** per ****. 

Surveillance ********* ********

******* ***** ** ** essential ****** ** ************. Even **** *** ****** of ****, ********* ** a ***** ****** ** many *******. ***** ********* cables *** ** **** costly *** ********* ******* more **** **** ******* WiFi ******, * '**** wired' ******* ********** ** frequently **** ******** **** greater *********, ******* ** troubleshoot, *** *** ***** to *** ************* ****** that ****** ******** **********.

****** ****** ********

**** ****** ******** ******* from *** *********** ******** cable ********. *** *******, suppose *** ******** ** an ****** ******** ** better ******** ** * camera ** **** ** a ****** *****-**** ****** **** ** the ********. ******** *** path *** ** ******** directly **** ****, * 100' ******* ***** ~$*,*** to ~$*,***.

******* *** *******

** ***** *****, **** a ******* ***, *** cost ** *** ********* can ** ***** ****, for ******* ******* * mini-storage ******** **** ******* structures **** ********* ***** cameras *** ********. ****** the *********:

  • * *********, **** ********* a ****** ~**' ****
  • ~***' ******** ***** * $55/ft 
  • ******** *****: ~$*,*** ****

*******, ** *** ********* were ******* *****, **** needing * **' **** trench, ** ***** ** over $**,*** *** *** same ******* ***.

[****: **** ***** *** originally ******* ** **** but ************* ******* ** 2019.]

Comments (13)

**************

* *** * ********* college ******** *** * shallow ******* ** **** for ***** ************.

* ** ****** **** that ***** *** ********** on ****** ******. ********* I **** * ************ with ******* ***** *********, they ****** *** ** is *** *******, ** doesn't **** ** ** buried **** ****. * always *** ******* *** NEC **** ** *** that *** * *** a *****. 

 

* **** **** ***** well ** ** **** over ** * *** while ******** *** *** state ****

**** ** * ***** article. ******* * **** a ********* ************* *** burying *** ******* ***** and ***** ******. * hope ******* ***** ** able ** *******. ** have **** ******** ** several ******** **** ********* trenching (******* *****). ** understanding ** **** *** NEC *****'* **** *** the **** *** ******* anywhere. *******, ** **** the **** ******* ******. Limited ****** ***** **** under ******* *** ***** 2 *******. ** ************* is ***** ** ** depth *********** *** ***** circuits. **** ** *** if *** ** * lot ** ********* *** will ***** **** ******* companies **** **&* *** Comcast **** ***** ****** buried ******* ******* ** depths ** **** * few ****** ******* ** 24 ****** ***** *****. 

 

****** *** **** *******.

*****, *** **********: **** particular ********* **** **** beyond ************ ****, *** typically ** *** **** to ******.  * ******* many ***** ****** ****** NEC ** ********** ** security ****, *** **** areas *** ***.  *** post ****** ******* *************** in **** *****.

*************, ***'* ******* *** circuits **** *** ********* apply ** ****/****** *** security ******* *** ***** 'power *******' ******* **** landscaping ****** *** *****/********* TV ********.  (******* ***-* ******* ******* applicability for ******** ***** **** "are *** ** ******** part ** * ****** or *********" *** **** operation). **** ** *** ATT *** ******* ** not ******** *** *** applies ** ****.

*'* *** **** *** 'integral' ** *******, *** in ** *** ** the ******** ****/****** ******** of *** ******** ****** will ** ********* ******* them, ****** ****** ** protected ** **** ** possible *** ****** ** the **** ****** ********* elsewhere.

************, ********* *** *** registered ** ********* ********* have **** ****** **** many ********** ** *** NEC, *** **** *** pretty **** ** ******** they ****. **** ***** include ********* *********, ***** companies, ***. 

** ** *********** **** note, **** *** ***** got ******* ** *** late ****'*/***** ****'*, ** was ********** * ******* in **** ************* ******* it ****** *** *** cable ** ***** ******* its **** ***** *** its ******* ********. **** "utility" ****** ******** ** effect *** **** ***** afterwards.

****** ******** ****:

 

When ** ***** *** ** ***!

When ** ***** *** ** ***!

**** * *** *** dig, ***, ***!

**** * *** * contractor *** *** ***** company, ** ***** **** our **-* ******* **** on *** ****** ******* house *** ********. **** we ***** ***** ***** it ******. * ********* contractor ***** **** ***** and **** **. **** were **** $** ** bury ** ********** ** length. * ***** ********* it, *** ********** **** just ******* * ***** type ****** ** *** ground ********** ****** *** yard ** **** * crack, ******* *** **** in, *** **** ** stomped ** **** ********. Line ***** **** *** up *" ** ** underground ** **** *** a **** ***. **** wouldn't **** ** ***** or ****** ****, ** lot's ** ************ **** lines ******* ******* **** the *****. 

***** **** *** ****** good ** ** ******* figuring ** ***** **** and ********, *** **** how *** ***** **** a ****** **** ***.

* ******* ******* *** includes **** **** **** for *** ******* *** I ******* **** **** year ***** *** * new ******* ***** ** better ******. ******* ***.*** was ***** ******* ******* that *** ****** *** in **** ******** ** this *******.  ****://***.************************.***/**********-**********-*********-*******/***-*******.***?*********=***.*

******'* **** **** ******* contribute ** *** **** that **** *** ****** for **** ***** *** fall ***** ******* *** and ********* **** ****** burial ***** ** ***** would *** **** ** be ****** ** ** inches ***** *****? 

** ******** ******** * project *** * ********* where ** ****** ******* miles ** **** *** fiber *** * *** camera ******. ** *** to ****** ** **** tight ***** ****** **** utilities *** *** ****** we ** *** ******* the ****** ** ******* something. ********* ** *** locates ****, *** ** many ***** ** *** no ***** ***. ** with ******** ******** ** would **** ** ** inches ** **** *****. During ***** **********, ********** did ******** ** ***** our ****** ****** *** after ** ****** **** NEC *** **** ****** us. 

*** ** **** * new ******* **** * miles ** ********* *** Fiber *** *** *. There *** ** ***** we **** **** ** implement *** **** ********. I ***** **** ** have *** ***** ** mind ** **** **** I ** ** **** using *** ******* ****. 

* **** ******** **** ditches ** ** ****. Some ** **** *** some ** *******. ** me ***** *** **** made ***** *** ** this *** *** *** is ***** **** *** trenching ****** ***** *** liability. * ***** ** you ****** ** * regular ***** * *** see *** ********* *** how **** *********** *** really ********* **** *****. 

*'* *** ****** ** or ***'* ****** ******. For ******** ** **** very ************* ** ***** here *** ** ***** hire **** ******* *** for *** ******. ** aren't ****** ***** **** we *** ****** *** installing ** ****** ** our *** ******. **** can ** **** **** trenching. *** **** ***** are *** ****** **** you *** ********* ******* of ********** *** ********* that *** *** **** at *******, ********** *** servicing. ** *** *** trenching **** **** **** probably * **** **** to **** **** *** trenching ******** ** ****. 

* **** *** *** point ***** *** **** a ********** ** ** trenching *** *** *** then *** ******** *** filled **** ***** *** debris, **** **** ***** or ****'* *** ****** elbows *** **** **** string **** ***** ******* the ******* **. ** that **** *** **** the ********** *** *** issues. 

** *** ** *** depth ******** *** *** voltage * **** ****** buried ******** * ** putting ** *** ****** below *** ***** ****. Believe *** ** ** you ***'* ******** *** put **** ***** **** eventually **** *** ** the ******. * *** have **** **** ***** where *** ***** ** and ***** ***** **** basically ******* **** * thin ***** ** **** and **** **** ***** held ***********. ******* ***** ago ** *** ****** to *** * ********* pit ** *** **** yard ** * ******. Who *****'* **** * good **** ** **********. I ****'* **** *** yard ****** ** ** were **** ***** ** dig * *** ****** down. *** *** ****** on *** ***** ****** in *** ****** ** more ********. **** ******'* have ******** ** **** would **** ****** *** wire ***** *** ***** line.

@ ******* *****, ******* we *** *** ********* out ** ** ** ourselves ** *** ***** liable ** *** ** our ******** ** *********. In **** **** ** won **** ******** ** part ******* **** **** we ******* *** *** electrical, ********* *** ***** ourselves. **** **** *** us **** ** *** the ******* **** **** us *** ******* **** liked ** **** **** larger ***********. ***** *** we *** **** ******** finished * ******* ******* in ******* ********* *** we **** **** ** demo **** *** ****. Second *** ******* ** were ******* ** ****** everything *********.

* ***** ** **** to ** *** ******* right, ********* *** *********. Also, *** * *** like ****, ** ****** have * ******* **** come ** *** ****** the ****** ********* ** once. **** ** **** have **** ******** *** weeks ***** ** **** all *** ***** *** wait *** *** ***** inspections. ** ** ****** to ****** ***** ******** at * ****, **** cable, **** *** **********, backfill *** ****** **** move ** ** *** next *******. 

***** **** ** * non ***** ** **** area ** ** **** tropical ******* **** ** the ****. * ****** to **** ** ****** 24" ***** ***** **** to **** ***** *********** for ******* ** *** our *****, *** ***** are ***** ***** ** have ** ********* **** trench ***** **** **** been ****** **** ******* lines, *** ** **** nowhere **** ** *** go. ** ***** ***** we **** ** ****** must **** ******* *** by **** ** **** sure ** ***'* *** anything. **** ** *** reason * **** ** be **** ** ***** to *** **** ***** cables *** ********** ******* 725 ***** * ***** do *** **** * minimum ***** *********** **** using ****** ****** *****. 

* *** ** ***** reason *** *** *** to **** ***** ******* 725.144 ** *** **** edition ** **** **** not *** ****. * am ****** ******* ** this ***** *** **** me ** ******* **** assumption. **** ** *** it *****:

 

******** ******* ***** ** nice. ******* ****** ** really **** **** ****** hot. *********** ** ****** like *** **** *** competent ***** ** ********** the ***** *** **** above. **** *** **** company * **** ***. Now ***** ** ** don't ** *********** ** don't **** ****** **** near ** ****. **** we ** *** ********* needing **** ** ******* really **** *** ************* out ** *** *****. Not **** ** ******'* get ** **** **'* just *** ** *** wheelhouse. ** ** ***'* of ***** ************ **** devices **** *** **** good ** ********* ******* poles *** ****. 

** *** ** *** liability * ***** *** customer **** **** ** us. ***** * ** more ********* ** *** liability ***** ***** *** project. 

***** ***. **** *********** is ******.

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