RCD for Isolating Transformer

[WotEver]

26 minutes ago, jddevel said:

OK so that seems the logical way to go rather than lift a heavy IT of and on to the boat although not the perfect situation seems to reduce the percentages of danger to an acceptable level.

Plus all persons aboard will be obliged to wear a rubber overall with inbuilt lifejacket, gloves and duel purpose thick soled rubber wellingtons just in case.

If they also wear full-body chain mail bonded to the hull with 50mm² cable they'll be even safer. They might not be able to move around much but that will save them having to wear life jackets. 

[jddevel]

2 minutes ago, WotEver said:

If they also wear full-body chain mail bonded to the hull with 50mm² cable they'll be even safer. They might not be able to move around much but that will save them having to wear life jackets. 

Don`t forget the straining wire to the cable in the event of actually being able to fall into he canal thus enabling the cable to have a duel purpose as a safety line/harness

[cuthound]

37 minutes ago, WotEver said:

If they also wear full-body chain mail bonded to the hull with 50mm² cable they'll be even safer. They might not be able to move around much but that will save them having to wear life jackets. 

Very true, took the grandkids to Warwick Castle the other day,  where they had a chain mail shirt you could try on. I could barely lift it with one hand!

[jddevel]

4 minutes ago, cuthound said:

I could barely lift it with one hand!

Only a half for you then

[Traveller]

On 24/08/2017 at 14:02, WotEver said:

Yes, there is a lot of confusion here. 

1) The IT should ideally be off the boat when in use. This is so that there is zero chance of any shore power conductor from directly contacting the boat. It doesn't need to be 'next to the bollard', that is just silly. 

2) Within the IT case the neutral & earth wires are connected together. This is the neutral-earth bond. 

3) Within the boat the cabling from the shore power connector should be inside trunking up to the Consumer Unit (or Combi if you have one of those). 

4) The CU should have a master RCD. The alternative would for the shore power inlet to go firstly to an RCD and then to the CU. The RCD in this instance can be adjacent to the CU. 

5) There should be a bond from the Earth busbar in the CU to the hull bonding point which should ideally be adjacent to but separate from the -ve bonding stud. 

Re 5). Presumably the bonding point can be anywhere on the hull and close (adjacent to) the CU? 

[WotEver]

9 minutes ago, Traveller said:

Re 5). Presumably the bonding point can be anywhere on the hull and close (adjacent to) the CU? 

Well yes, it can be, but like I wrote, it... 

... 

should ideally be adjacent to but separate from the -ve bonding stud. 

Electrically the two are identical but wiring it as I suggested is a logical layout for anyone else to understand and saves them searching to find it. 

[Springer]

......common sense, care and the advice of a decent professional marine electrician is all you require!!!!!!!!!