What are the accepted methods of grounding Cable TV / Satellite and Telephone cables at a residence?
In my area, most Electrical service appears to be grounded at the meter/ point of entry into the home; however, I have seen quite often that telephone or cable service is not grounded at the point of entry into the home, but only grounded at the green box out in the middle of the property somewhere. In my opinion, this leaves a ground loop path for lightning to get into the home, and cause damage.
820.33 describes grounding of outer conductive shield of coaxial cable. 250.4 describes grounding conductive materials enclosing electrical conductors at the electrical supply source, which I would interpret to be the meter or point of entry into the home. 820.40 describes the grounding conductor should not be smaller than 14 AWG.
Is my interpretation correct, and that both the cable and phone should be grounded at the point of entry to the home?
It would be appreciated if anyone could post some information what devices exist to bond the shield of RG6 cable to 14 AWG ground conductor, and the proper grounding methods of this cable and incoming telephone wires.
Erik Munevar
Indianapolis
In my area, most Electrical service appears to be grounded at the meter/ point of entry into the home; however, I have seen quite often that telephone or cable service is not grounded at the point of entry into the home, but only grounded at the green box out in the middle of the property somewhere. In my opinion, this leaves a ground loop path for lightning to get into the home, and cause damage.
820.33 describes grounding of outer conductive shield of coaxial cable. 250.4 describes grounding conductive materials enclosing electrical conductors at the electrical supply source, which I would interpret to be the meter or point of entry into the home. 820.40 describes the grounding conductor should not be smaller than 14 AWG.
Is my interpretation correct, and that both the cable and phone should be grounded at the point of entry to the home?
It would be appreciated if anyone could post some information what devices exist to bond the shield of RG6 cable to 14 AWG ground conductor, and the proper grounding methods of this cable and incoming telephone wires.
Erik Munevar
Indianapolis