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Either a Galvanic Isolator or Isolation Transformer, the IT been the better but considerably more expensive option. People will come along and recommend a decent GI but for a decent IT the Airlink transformer such as the BT3231 is highly recommended here on CWDF.

 

Edit to add link http://www.airlinktransformers.com/search/searchresults/?searchword=Boat

Edited by Robbo
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Abso-bloomin-lutly you do. Even if someone comes along and argues til they're blue in the face that you don't, the consequences of the risk far outweigh the cost of the precaution. What makes it worse is that if your electrics are perfect and someone else's are dodgy, it's your boat that corrodes.

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Very simple solution and saves you digging around in electrics(or paying someone) to fit one.

 

I would be more concerned that we are all responding to a talking boat.

  • Greenie 2
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Very simple solution and saves you digging around in electrics(or paying someone) to fit one.

 

I would be more concerned that we are all responding to a talking boat.

Grin.

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Interesting that the suppliers of GIs linked are taking the P*** with 4 diodes (from RS at £2 each) and a heatsink, box, connectors are sold for nearly as much as an isolation transformer! Is this because they have "marine" written on them?

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Interesting that the suppliers of GIs linked are taking the P*** with 4 diodes (from RS at £2 each) and a heatsink, box, connectors are sold for nearly as much as an isolation transformer! Is this because they have "marine" written on them?

No, it is because the diodes aren't £2 each. Do you know what the peak current rating if the diodes is?

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Interesting that the suppliers of GIs linked are taking the P*** with 4 diodes (from RS at £2 each) and a heatsink, box, connectors are sold for nearly as much as an isolation transformer! Is this because they have "marine" written on them?

Here we go again. Check out the ABYC specification for a GI and tell us all how you'd achieve that with a two quid diode from RS.

 

Tony

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If you had both would there be any advantage?

 

 

Further to Brian's answer. The IT will also stay working in the event of a shore-side earth fault such as a recent poster probably suffered from when so got a shock from the hull (boat out of the water)

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Further to Brian's answer. The IT will also stay working in the event of a shore-side earth fault such as a recent poster probably suffered from when so got a shock from the hull (boat out of the water)

 

Very true.

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Either a Galvanic Isolator or Isolation Transformer, the IT been the better but considerably more expensive option. People will come along and recommend a decent GI but for a decent IT the Airlink transformer such as the BT3231 is highly recommended here on CWDF.

 

Edit to add link http://www.airlinktransformers.com/search/searchresults/?searchword=Boat

So can you customise these with a standard blue plug and socket and end up with something that could be moved between boats if required?

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So can you customise these with a standard blue plug and socket and end up with something that could be moved between boats if required?

Absolutely. As supplied they're just a transformer in a plastic case.

 

The advantage of the plastic case is that it can sit on the counter. Sadly these days it'd probably have to be chained to the boat.

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So can you customise these with a standard blue plug and socket and end up with something that could be moved between boats if required?

Confirmed, the plastic case hasn't been predrilled for cables or sockets so you can custom and still keep water tight. (Mine was the 3600va one, the 1600va ones look like they have cable glands already fitted)

 

They also do metal case ones for a more permanent installation.

Edited by Robbo
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