tykkyt e blue
Well-Known Member
Umm - I meant no offense - you never know what another person understands or has been taught, so purely from a discussion POV...
Its my understanding that the potential voltage is between the zinc anode and the lead - the ss wire is only the conductor ( minus the voltage diff between ss and lead, which are close on the galv scale )
Since you have .8v or so on the entire length of cable ( nominally, w std bonding and typical amount of zinc anode )BETWEEN the lead and zinc the BB is NOT applying voltage to the ss wire, rather, it is reducing the voltage created by the metals to the .6-.65 level. ( shunt to ground thru BB? with some of the pv going thru the BB circuit to hull ground instead of the battery ground) maybe someone w elec engineering could wade in???
I did test this several times when I fished from my old alum boat - I even once went so far to make polished SS pancake weights one winter to test.
A digital voltmeter would show various voltages between the ss wire and hull ground depending on BB setting. The change to SS weights made a dramatic change in BB setting ( but sadly horrible effect on blowback - the surface area to weight of ss is just not high enough compared to lead, no matter how hydrodynamic a shape you try )
No doubt, you must be correct about applying a voltage to the ss wire that grounds back to the hull anode and how fast that would dissipate
Its my understanding that the potential voltage is between the zinc anode and the lead - the ss wire is only the conductor ( minus the voltage diff between ss and lead, which are close on the galv scale )
Since you have .8v or so on the entire length of cable ( nominally, w std bonding and typical amount of zinc anode )BETWEEN the lead and zinc the BB is NOT applying voltage to the ss wire, rather, it is reducing the voltage created by the metals to the .6-.65 level. ( shunt to ground thru BB? with some of the pv going thru the BB circuit to hull ground instead of the battery ground) maybe someone w elec engineering could wade in???
I did test this several times when I fished from my old alum boat - I even once went so far to make polished SS pancake weights one winter to test.
A digital voltmeter would show various voltages between the ss wire and hull ground depending on BB setting. The change to SS weights made a dramatic change in BB setting ( but sadly horrible effect on blowback - the surface area to weight of ss is just not high enough compared to lead, no matter how hydrodynamic a shape you try )
No doubt, you must be correct about applying a voltage to the ss wire that grounds back to the hull anode and how fast that would dissipate