Getting shocked

[Mac2]

No, it is not specific to your boat but in this case to all boats bonded as per standard would feed into the dock pedestal thru ground wire. Maybe the ELCI dock breakers would catch this imbalance as well and trip. It has already been shown that bonding has allowed DC current to travel thru the AC ground from boat to boat.
I do not see a way to prevent a metal boat from repeating this shock hazard without a dock breaker tripping.

I recall reading an article about a discussion of weather to bond your thru hulls or not. One side said it was better not to bond as stray current would only eat away one thru hull (Im assuming fiberglass boats) versus all thru hulls and the other side said bonding helps spread the load, lessening the destructive stray voltage.
I don’t recall if they specified ac or dc, or anchored vs dock. Thoughts?

 

[SteveK]

I recall reading an article about a discussion of weather to bond your thru hulls or not. One side said it was better not to bond as stray current would only eat away one thru hull (Im assuming fiberglass boats) versus all thru hulls and the other side said bonding helps spread the load, lessening the destructive stray voltage.
I don’t recall if they specified ac or dc, or anchored vs dock. Thoughts?

This is just my thoughts, research yourself is best.

As far as I know the bonding of AC GRD and DC negative was to protect you inside the boat should an AC hot find its way to say the engine block.
Galvanic isolators were then developed to stop DC stray current from finding a path from your boat through the AC ground to the offending source.
So one protection resulted in another problem created.

Then the bonding of thru hulls to a transom zinc on wooden boats must be watched for overprotection as the wood around the thru hull um gets affected as I found when replacing 50 year old thru hulls.

Current has to flow from hot to ground. An unbonded thru hull in the water that sits in the water but has no other path cannot flow current so how can it corrode? Daisy chain 2 or more and electricity is interesting as it takes the path of least resistance and can go into one and out the other. The mystery of swimmers shock shows that current in the water detoured into & out the body before carrying on.
If you are insulated from ground and only touch the hot of a live wire no harm should occur as there is no path to ground. We have been told if a high power line falls down do not pick up your feet as you moon dance shuffle away.

Again standing on the dock and getting a buzz from a metal boat suggests the dock deck conducted current away. Probably would not have felt it if standing on a rubber mat.