2/27/2024 0 Comments Coax ground isolator near meYou must bond all system grounds, antenna, power, CATV, telephone, and so on with a heavy bonding jumper. Omitting this jumper is a serious Code violation, second only to no grounding at all. However, even after this dedicated grounding means is established, in order to be NEC-compliant, the installation must have a bonding jumper not smaller than 6 AWG or equivalent, which is connected between the CATV system's grounding electrode and the power grounding electrode system for the building. The major distinguishing characteristic is that for one- and two-family homes the grounding conductor cannot exceed 20 feet in length and should preferably be shorter. If a grounding electrode such as the Intersystem Bonding Termination is not within 20 feet, it is necessary to drive a ground rod for that purpose. The grounding conductor is 14 AWG minimum so that it has current-carrying capacity approximately equal to the outer shield of the coaxial cable. The grounding conductor is 14 AWG minimum so that it has current-carrying capacity approximately equal to the outer shield of the coaxial cable. Instead, the shield of the coaxial cable is connected to an insulated grounding conductor that is limited to copper but may be stranded or solid. There is no antenna discharge unit as required for satellite dish installation. Improper grounding of coaxial cable used for CATV is very common. Because of the spacer, capacitive coupling is diminished so that the cable provides a high-quality signal for data, voice, and video transmission. Typically, CATV is brought into the building via coaxial cable, which has a center conductor, insulating spacer, and outer electrical shield. Grounding for CATV is slightly different. If the CATV coax cable shield is properly grounded then I would look for a loose and or corroded connection of the ground wire that bonds, connects, the ground block to the grounding system of your house. Also connected to the ground block is a wire that should connect to the main grounding system of the electrical service of the house. From the grounding block another coax cable is connected and enters your home. If you look outside your house where the provider's CATV coax cable attaches to the house and follow the coax cable to where it enters the house you should see a grounding block where the coax cable connects to. For lightning protection NEC safety code require the CATV provider's RG6 coax cable's outer shield be bonded, connected, to the main grounding system of the electrical service of your home. I would suggest you find the cause of the ground loop. Has anyone taken a direct hit from lightning and not had a fire occur Back in the 90s, and early 2000s Ive had two direct. The lightning would just flash over the isolator device. Ive noticed from just about all the pictures, diagrams and guides on the net that coax, plus ground wires are usually tacked directly to the roof, and then to siding. Click to expand.Though the ground loop isolator stops the hum it will not protect your A/V equipment from a near by lightning strike.
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