laying high voltage cables ground. environment does not damage electric poles. excavation meter deep in ground black plastic coate

black bundle bundles cable cables coate coated communication connection cover curved damage deep digging ditch does electric electrical electricity energy environment excavation excavator failure fiber ground high icing industrial infrastructure insulation internet lawn laying meter network not optic optical outdoor pipe pipeline plastic poles protection pvc risk row safety sand shock sidewalk site soil strong tape telecommunications telephone urban voltage wires work yellow