Earth Bonding
Connections made between metallic service pipes (gas, water) and the earth terminal of the consumer unit to ensure all metalwork in the property is at the same electrical potential. Main bonding (from pipes to the consumer unit) and supplementary bonding (between metalwork in bathrooms and kitchens) are required under BS 7671. Corroded or missing bonding conductors are a common finding on EICR inspections and should be remedied promptly.