One deliberate connection that bonds the system’s negative to the chassis or earth at a single place — never two, which would create a loop.
Bonding the system negative to the chassis or earth at exactly one place gives faults a safe path to trip protection — while avoiding the ground loops that two connections would create.
One deliberate bond links the negative busbar to the chassis/earth. Never two — a second path makes a loop that can corrode, hum, or fool the monitor.
Design your van, boat, cabin or RV system in Wattonomy and it marks a single bonding point on the diagram and flags where it belongs for your platform — from the appliances you actually run, sized to the recognized standard for your region. You see it on the wiring diagram, in the sized parts list, and in a plain-English build pack that explains the reasoning behind every choice. No account, no email — about a minute to a complete, validated design.
Two or more bonds create a loop that current can circulate around — causing corrosion, noise and inaccurate monitoring. One deliberate point keeps faults safe and the system clean.
Closely related: bonding connects metal parts and the system negative together; grounding ties that to earth/chassis. Both are done at the single point.
It takes about a minute. No account, no email.