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What's the difference between grounding and bonding? Read some stuff about marine application and do not understand.
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confusing words
The terms are defined in Article 100 and 250.2 of the NEC. Section 250.4 provides the performance requirements of Article 250. Grounding is a connection to earth, and bonding is the connection of items to each other.
what that means is that a panelbox is grounded by one conductor either to a driven ground rod or a water pipe in direct contact to the earth.
bonding is the interconnection with everything else on the system.
example: the neutral bar is grounded by a conductor to a water pipe ground. the neutral bar is bonded to the panelbox by a jumper or a screw.
in the case of a boat, because there is no earth to connect to, the ground is a copper or bronze plate bolted to the outside of the hull in direct contact with the water and connected by a wire to the panelbox.
in the case of a metal hulled vessel the entire metal parts are bonded together by bolts or weldments and fastened to the panelbox that makes intimate contact with the vessel's structure. -
Great answer....
Thanks, HayZee. More simple than I thought!Comment
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