1. Intersystem Bonding Terminal
The intersystem bonding terminal is a terminal that is provided as a grounding site by the electrician that wires the house.
• Commonly found near the exterior meter box and cable/phone distribution located on the side or rear of the home
2. Meter Box, Service Equipment/Power
Service/AC Disconnect Enclosure - The meter box, service equipment, power service and AC disconnect enclosures include any metal enclosure, as long as it is connected visually with rigid conduit to the grounding electrode conductor.
• Commonly found on the exterior side or rear of the home
• Component cannot impede the opening/closing of the enclosure
3. Rigid Electrical Conduit
The rigid electrical conduit is a metal enclosure housing electrical wiring.
• Commonly found in various locations on the exterior of the home and near the meter box
• Conduit must be continuous to meter box
4. Grounding Electrode Conductor
The grounding electrode conductor is a #6 copper or aluminum wire running from the grounding electrode to the meter box.
• Commonly found near the exterior meter box on the side or rear of the home
5. Interior Grounded Cold Water Pipe
The interior copper cold water pipe is part of the home’s water distribution system.
• Commonly found near the home’s utilities which could be in the basement or utility closet
• Ground location must be on the interior of the building within 5 ft. of the water pipes entrance
• External water spigots are not an acceptable ground source
6. Building Grounding Electrode or Conductor
The building ground electrode system includes the ground rod and structural frame of the home.
• Usually difficult to locate and rarely exposed.
The ground rod - Minimum of 1/2 inch diameter and buried 8 ft. into the earth
• Commonly found near the exterior meter box and grounding electrode conductor
The structural mainframe of a building - Metallic I-beams
• Commonly found in the basement, crawl space or under a mobile home
