2.5mm flex rating?

[mattysupra]

Hi, can someone tell me how many amps 2.5mm flex can handle please.


The flex is installed on a boat and is 8 meter in total in a well vented area.

Im a bit worried as it has a 40 amp RCD connected to the end. Surely this is to high?

As above what is the max the cable could handle? should i be concerned and get the rcd changed for a smaller one? What size should it be changed to if 40amp is to high?

Thanks

 

[333rocky333]

Rcd rating is irrevolent to a certain extent, its the mcb size that matters,
or is it a 40 amp rcbo

 

[mattysupra]

Rcd rating is irrevolent to a certain extent, its the mcb size that matters,
or is it a 40 amp rcbo

40 amp rcbo i think. Both the neutral and postive go into it.

However it dont have a earth connection on it, the earth goes straight into the board.

I will see if i can get a picture of it.

 

[mattysupra]

i think this is it - http://www.neweysonline.co.uk/newle...230v-ac/1050150563/ProductInformation.raction

 

[securespark]

That is an RCD only.

You should have an MCB or fuse protecting this cable.

Can you post pictures?

 

[333rocky333]

look on it close

an rcbo will be printed B40 or C40 rather than just 40


As a guide TLC rate theres at 25 amp
http://www.tlc-direct.co.uk/Main_Index/Cable_Index/Flex_White_1/index.html

 

[mattysupra]

That is an RCD only.

You should have an MCB or fuse protecting this cable.

Can you post pictures?

I can tomorrow evening.

This is a shore hook up / 240volt connection . I think that all marine's have there own protection that we plug into ?

However a diode system i fitted says it needs a RCCB breaker? This is when i started looking. I phoned newey aire about this RCD and asked if has earth protection etc and said its fine.

It was when i was fitting the diode system that i i noticed the cable was 2.5mm and i started thinking about cable sizes and the '40'amp bit didnt add up to me.

(The diode system connects to the earth)


O.K, seems i have more than one thing to worry about.

So to start then, can we eliminate if the cable is for the job?

then move onto the rcd?

 

[mattysupra]

look on it close

an rcbo will be printed B40 or C40 rather than just 40


As a guide TLC rate theres at 25 amp
http://www.tlc-direct.co.uk/Main_Index/Cable_Index/Flex_White_1/index.html[/QUOTE]

im sure it is the exact item i posted the link to.

It was when i goggled the product it came out as a newey - aire product. Im 99% sure the link is the same item.



I dont understand your reply, are you saying the cable is good for 25amps?

 

[ericmark]

2.5 mm flex normally considered as 25A.
You say boat so normally there will be a MCB on the feed to the boat and a RCD both on shore and on board.

But one does have some odd systems on a boat like diodes in the earth cable so you really do need to give some more info.

Also with inverters the standard RCD will often not do it has to be a special able to handle the simulated sine wave.

So what sort of boat and what is the hull made of and where does the supply come from?

 

[mattysupra]

2.5 mm flex normally considered as 25A.
You say boat so normally there will be a MCB on the feed to the boat and a RCD both on shore and on board.

But one does have some odd systems on a boat like diodes in the earth cable so you really do need to give some more info.

Also with inverters the standard RCD will often not do it has to be a special able to handle the simulated sine wave.

So what sort of boat and what is the hull made of and where does the supply come from?

OK,

boat is GRP (fibreglass)

It has this now fitted inline of the earth wire (i installed this) - http://www.shop.sterling-power.com/acatalog/Galvanic_Isolators___Zinc_Savers.html

The 240v comes from shore power, this is a blue round plug i plug into the marina. (like so ) - http://www.google.co.uk/imgres?q=ca...w=141&start=0&ndsp=20&ved=1t:429,r:8,s:0,i:96

It does not have a inverter. (however im looking at having one installed)

 

[mattysupra]

so are we agreeing that the 40amp rcd is way to high a rating for 2.5mm cable and i need to get a spark in to change it for something else?

Also the diode system is asking for a rccb so i not only need a different rated rcd but a extra breaker that is a rccb?

 

[mattysupra]

o and to add, this boat passed its safety cert a few months ago as it was. Should i be reporting the safety inspector or is all o.k. ?

 

[Speakercon]

I assume because it is a boat plugging into a hook up it has a 16A plug on the end of the 2.5mm (blue artic?) cable, in which case the 16A hookup outlet will be protected at 16A so its fine.

Is it 16A plug like this? (Note 16A not 32A)

 

[mattysupra]

I assume because it is a boat plugging into a hook up it has a 16A plug on the end of the 2.5mm (blue artic?) cable, in which case the 16A hookup outlet will be protected at 16A so its fine.

Is it 16A plug like this? (Note 16A not 32A)

Yes it is, thanks