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sparky help needed again.

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Old 07-11-2010, 05:00 PM
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L33 BYT
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Default sparky help needed again.

So a few weeks I asked about how to power up a static caravan that my parents use in the back garden.

Its going to be connected and tested properly however the cable run and entry into the house will ne done by me.

The house end is below.
I believe there is an issue here as their is only a 20Amp slot spare.


The caravan end is below
it has a 32amp and 2 6 amp


so what sort of feed needs to go to house?
30 Amp or bigger?
Do i need a new consumer board?
will the van need earth or will it come from house?
What core size will i need for awc cable?
please help

Lee
Old 07-11-2010, 06:09 PM
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vaughant
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Originally Posted by L33BYT
So a few weeks I asked about how to power up a static caravan that my parents use in the back garden.

Its going to be connected and tested properly however the cable run and entry into the house will ne done by me.

The house end is below.
I believe there is an issue here as their is only a 20Amp slot spare.


The caravan end is below
it has a 32amp and 2 6 amp


so what sort of feed needs to go to house?
30 Amp or bigger?
Do i need a new consumer board?
will the van need earth or will it come from house?
What core size will i need for awc cable?
please help

Lee
I'd say,although I'm not really a domestic boy but I've done a bit so:
1. Generally your feed in the board should be larger than the largest switch in the caravan.
2.32amp or above,problem being if what your feeding from is smaller,then that will trip first,so any faults in the van will show up in the house first,inconvenience more than anything.
3.Not really,if it works and is safe that's fine,certainly legal.
4.The van won't necessarily need additional earthing but it won't harm to do,your earth should come via the armoured or you can buy three core,use one of the spare cores as an earth and connect that up to the earthing block,personally I'd put an earthing rod outside the van and use that.
5.I'd go for 6mm myself,better safe than sorry.price wise there's not much in it really,use tlc for your bits,get their really good on price and their gland kits are superb,come with all the bits you need!!!
Old 07-11-2010, 06:15 PM
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cozzy940
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db has no rcd protection ideally should be replaced with 17th dual rcd board to comply with regs, 6mm swa fine, stake van end,
Old 07-11-2010, 06:21 PM
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L33 BYT
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Originally Posted by cozzy940
db has no rcd protection ideally should be replaced with 17th dual rcd board to comply with regs, 6mm swa fine, stake van end,

i didnt show it but there is a seperate rcd before the cb. i know its not ideal as if it goes it does the whole lot.
Old 07-11-2010, 06:28 PM
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Ask danneth on here he`s a good sparky Lee.
Old 07-11-2010, 06:35 PM
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caprizetec170
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ah not sure what regs are over there but 4mm sq swa should be plenty with shield an earth connacted to earthing rod outside. dont know why your internal sockets have 32 amp breaker should be only 20 other than cooker and have a main fused breaker and an rcd breaker for sockets only not lights
Old 07-11-2010, 06:44 PM
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danneth
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From what i can see it looks like the best way to do it is, come out of the DB in the house into a adaptable with some 6mm T+E then from the adaptable box in some 6mmSWA go straight into the DB in the caravan it looks like there is already an RCD in the caravan, then find out what kind of current your going to be using and find a breaker to suit for the DB in the house
Old 07-11-2010, 07:03 PM
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L33 BYT
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Originally Posted by danneth
From what i can see it looks like the best way to do it is, come out of the DB in the house into a adaptable with some 6mm T+E then from the adaptable box in some 6mmSWA go straight into the DB in the caravan it looks like there is already an RCD in the caravan, then find out what kind of current your going to be using and find a breaker to suit for the DB in the house
Danneth,

The yellow colour code on the consumer board, i take it that it is implicitally for a 20amp mcb?
your above info seems very straight forward. I take it as you mention twin and earth i would use the house earth?
Old 07-11-2010, 07:14 PM
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sound advice above.if for some reason you do get niusance triping, a main cause could be that you are using an rcd to run another rcd.it can cause noise on the line with both rcds talking to each other
Old 07-11-2010, 07:24 PM
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Originally Posted by L33BYT


The yellow colour code on the consumer board, i take it that it is implicitally for a 20amp mcb?
your above info seems very straight forward. I take it as you mention twin and earth i would use the house earth?
The yellow 20amp can be changed for a 32amp (red)

Use the house earth.

And use a Steel (galv) box at each end to terminate the SWA in, it's the easiest way;

http://cgi.ebay.co.uk/ADAPTABLE-BOX-...item3f01f38587


.
.

Last edited by focusv8; 07-11-2010 at 07:26 PM.
Old 07-11-2010, 07:38 PM
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Hi, what you need to do to comply with section 7 of the 17 th edition regs is fit a 32amp breaker in place of that spare 20amp one in the house, run a length of 6mm twin and earth to an adaptable box and convert to steel wire armoured cable to run to the caravan. The swa cable need only be 2 core 6mm as you need to segregate the earth at the caravan end and fit an earth rod and connect that to the caravan disboard with some 10mm green and yellow 6491x cable, then test your earth loop impedance and make sure it's under 200 ohms.
Also make sure you connect the steel armour to the house earth only
Cheers Jason
Old 07-11-2010, 07:48 PM
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Originally Posted by cossie330
Hi, what you need to do to comply with section 7 of the 17 th edition regs is fit a 32amp breaker in place of that spare 20amp one in the house, run a length of 6mm twin and earth to an adaptable box and convert to steel wire armoured cable to run to the caravan. The swa cable need only be 2 core 6mm as you need to segregate the earth at the caravan end and fit an earth rod and connect that to the caravan disboard with some 10mm green and yellow 6491x cable, then test your earth loop impedance and make sure it's under 200 ohms.
Also make sure you connect the steel armour to the house earth only
Cheers Jason
so just one query with that yellow marker, that will be fine to have a 32amp breaker in its place. I guess what i am saying with a lack of knowledge is why is that pre coloured yellow?
Old 07-11-2010, 07:53 PM
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No 16A socket this time?
Old 07-11-2010, 07:53 PM
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Originally Posted by L33BYT
I guess what i am saying with a lack of knowledge is why is that pre coloured yellow?
The colour makes it easier to identify the fuse / mcb size for replacement, although now it's mcb you don't replace anywhere near as often.

As the size of fuse / mcb increases the slots in the holder and blades on the fuse carrier / mcb get bigger.

That means you can't fit a 32amp fuse / mcb in a 6 amp holder.

.

Last edited by focusv8; 07-11-2010 at 07:54 PM.
Old 07-11-2010, 07:56 PM
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danneth
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Originally Posted by L33BYT
Danneth,

The yellow colour code on the consumer board, i take it that it is implicitally for a 20amp mcb?
your above info seems very straight forward. I take it as you mention twin and earth i would use the house earth?

As said mate yes thats just colour identification just find yourself another 32A breaker and holder ( i might actually have one if your struggling ) and use the houses earth
Old 07-11-2010, 08:04 PM
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Originally Posted by L33BYT
so just one query with that yellow marker, that will be fine to have a 32amp breaker in its place. I guess what i am saying with a lack of knowledge is why is that pre coloured yellow?
What you need to do is turn the fuse board off then remove the yellow marker and replace it with a red one and a 32 amp breaker
Old 07-11-2010, 08:06 PM
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Originally Posted by St3V3_C
No 16A socket this time?

no was of the 32 amp variety not 16. Had only had a quick look initially.
Old 07-11-2010, 08:07 PM
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Originally Posted by cossie330
What you need to do is turn the fuse board off then remove the yellow marker and replace it with a red one and a 32 amp breaker

ah i see they come with the backing

http://www.diy.com/diy/jsp/bq/nav.js...&isSearch=true
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