corrosion no shore power just solar and inverter

[peterboat]

Hi all just a thought I have solar panels plus 3000 watt inverter I have a galvonic isolator in the circuit, and when had the boat out of water recently their was no corrosion. But Paul who owns the dry dock said he had seen instances where boats with large inverers were corroding what do the collective you think about this issue

 

 

Peter

[ditchcrawler]

I dont think you need the galvonic isolator as you dont have a shore supply. Lots of large invertors are combi's so my also at times use a shore supply

[steelaway]

If there is no corrosion whats the problem?

Keep away from shore power.

My anodes were still good after 7 years but I was never connected to shore power

 

Alex

[Guest]

Hi all just a thought I have solar panels plus 3000 watt inverter I have a galvonic isolator in the circuit, and when had the boat out of water recently their was no corrosion. But Paul who owns the dry dock said he had seen instances where boats with large inverers were corroding what do the collective you think about this issue

 

 

Peter

I am puzzled as to why a correctly wired inverter would cause hull corrosion, but perhaps others know different. My 3Kw PSW is earthed to the hull, neutral earth linked, and the battery neutrals are earth bonded close to the 240V earth bond. The guy who blacks it claims that the hull is "doing very well" compared to some boats he gets in; even newer ones. He claims those who use shore power without galv. isolator/transformer are often showing pitting, and even an odd one with these devices fitted. My anodes were changed at 5 years, though I was likely being over cautious and could have squeezed 6 maybe 7 years. I have no shore supply.

Edited August 11, 2013 by Guest

[ditchcrawler]

I am puzzled as to why a correctly wired inverter would cause hull corrosion, but perhaps others know different. My 3Kw PSW is earthed to the hull, neutral earth linked, and the battery neutrals are earth bonded close to the 240V earth bond. The guy who blacks it claims that the hull is "doing very well" compared to some boats he gets in; even newer ones. He claims those who use shore power without galv. isolator/transformer are often showing pitting, and even an odd one with these devices fitted. My anodes were changed at 5 years, though I was likely being over cautious and could have squeezed 6 maybe 7 years. I have no shore supply.

I take it you dont dangle a live electrode in the water to catch fish then

[peterboat]

I am puzzled as to why a correctly wired inverter would cause hull corrosion, but perhaps others know different. My 3Kw PSW is earthed to the hull, neutral earth linked, and the battery neutrals are earth bonded close to the 240V earth bond. The guy who blacks it claims that the hull is "doing very well" compared to some boats he gets in; even newer ones. He claims those who use shore power without galv. isolator/transformer are often showing pitting, and even an odd one with these devices fitted. My anodes were changed at 5 years, though I was likely being over cautious and could have squeezed 6 maybe 7 years. I have no shore supply.

Yes my thoughts as well my anodes are 5 years old and in July when I blacked her they were still good. So that was why I was so surprised for Paul at Goole to say what he did.

 

Peter

[Guest]

I take it you dont dangle a live electrode in the water to catch fish then

That would be a shocking thing to do.

Yes my thoughts as well my anodes are 5 years old and in July when I blacked her they were still good. So that was why I was so surprised for Paul at Goole to say what he did.

 

Peter

I suspect Ditchcrawler is spot on, and the inverters he has seen are combi units which may well get connected to shore power.

[Grace and Favour]

I take it you dont dangle a live electrode in the water to catch fish then

 

 

That would be a shocking thing to do.

Electric eels?