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galvanic Isolator

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Robbo

Robbo

Posted
Posted (edited)

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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Sea Dog

Sea DogDonate to Canal World

Posted
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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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matty40s

matty40s

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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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Scu8a

Scu8a

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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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Tiggs

Tiggs

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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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nicknorman

nicknormanDonate to Canal World

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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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WotEver

WotEverDonate to Canal World

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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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Tony Brooks

Tony BrooksDonate to Canal World

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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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WotEver

WotEverDonate to Canal World

Posted
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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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PeterG

PeterGDonate to Canal World

Posted
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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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WotEver

WotEverDonate to Canal World

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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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Robbo

Robbo

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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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