Posted by ken on July 10, 19103 at 06:18:38:
In Reply to: external hull grounding plates posted by rob bradley on July 06, 19103 at 16:22:28:
: We are building a Double Eagle in timber. The Glen L instructions calls for a 1 sq.ft copper external grounding plate. can any one explain to me what its purpose is and why here in Australia, no fibre glass boats ( the Double Eagle is sheathed in fibre glass ), are fitted with such grounding plates.
That plate they speak of is used for 'bonding' the fittings in the hull. It helps to prevent electrolysis corrosion of metal parts in the hull.
A good question would be why has sacrificial zincs become more popular than this system?