I know this question has been asked a million times and I have scoured the threads but just wondered whether anyone would be kind enough to offer a solution to my particular problem!! 
Here goes:
At the mo there is:
A 2.5mm TE cable running from a 5A breaker in the CU in the house which runs through the wall straight underneath a covered porch at the front of the house...This supplies a 500W PIR Floodlight that underneath said porch.
The guy who lived here before has installed this. He also (ridiculous..) has taked effectively a spur from this floodlight to supply a Wickes outdoor DBL socket box on the outside wall.
What I need:
I have just erected a Wooden 6x4 Garden shed at the side of the house and would like to have a single interior light of some description and a double socket for lawn mower/tools etc..
What I am thinking of doing?!:
Firstly I will get rid of the Wickes Outdoor socket as this is clearly wrong on so many levels...
The Floodlight underneath the porch I will leave on its own, fed as is, from the CU inside. Question Is the cable used suitable or should I replace? (the cable goes straight from the lighting Ring 5A breaker on the main house CU, through the wall where it is already under the porch if this makes any difference)
As for the Shed electric supply, I am thinking one of two options; either:
Take a separate feed from the main house CU (15A?) and run in through the wall and round the exterior wall to the side of the house and into the shed where it will connect to a JB splitting off to a 20A DP Iso Switch and then to a DBL Socket (prob use the old wickes outdoor one?) and a 3A FCU to an interior light.
or alternatively..
The Shed stands right up against the side of the house - On the inside of this wall there is a DBL socket in the living room which is part of the ringmain. Can I take a spur from this, go through the wall into the shed using appropriate FCU etc?
The Shed electrics (light and socket) will not overload the ring as effectively its the same socket on the inside that i plug the mower etc into anyway... but is it good practice? Its certainly less work/cost as there will be less cable length and no messing round with the CU (which I am not supposed to really do as I am not a qualified electrician...I'm probably not allowed to do what I want to do with the shed on those partP grounds anyways but it is very simple and have tackled more complex things inside the house.
If anyone could advise on the best method (without getting a spark in to do the job!) that would be fantastic. Also I would like to know what cable I should be using in both instances (must you use SWA cable if the cable is run along the wall of the house above head height? in both situations I am not planning on burying any cables.
An electician friend of my brothers said I could 'get away' with doing the second option but using a plug on the inside, plugged into the livingroom double socket as this is classed as not hard-wired and therefore I am ok to do? Is this true?!
Many Thanks in advance!
Lik
(oops, cable run is no more than 18ft)
Here goes:
At the mo there is:
A 2.5mm TE cable running from a 5A breaker in the CU in the house which runs through the wall straight underneath a covered porch at the front of the house...This supplies a 500W PIR Floodlight that underneath said porch.
The guy who lived here before has installed this. He also (ridiculous..) has taked effectively a spur from this floodlight to supply a Wickes outdoor DBL socket box on the outside wall.
What I need:
I have just erected a Wooden 6x4 Garden shed at the side of the house and would like to have a single interior light of some description and a double socket for lawn mower/tools etc..
What I am thinking of doing?!:
Firstly I will get rid of the Wickes Outdoor socket as this is clearly wrong on so many levels...
The Floodlight underneath the porch I will leave on its own, fed as is, from the CU inside. Question Is the cable used suitable or should I replace? (the cable goes straight from the lighting Ring 5A breaker on the main house CU, through the wall where it is already under the porch if this makes any difference)
As for the Shed electric supply, I am thinking one of two options; either:
Take a separate feed from the main house CU (15A?) and run in through the wall and round the exterior wall to the side of the house and into the shed where it will connect to a JB splitting off to a 20A DP Iso Switch and then to a DBL Socket (prob use the old wickes outdoor one?) and a 3A FCU to an interior light.
or alternatively..
The Shed stands right up against the side of the house - On the inside of this wall there is a DBL socket in the living room which is part of the ringmain. Can I take a spur from this, go through the wall into the shed using appropriate FCU etc?
The Shed electrics (light and socket) will not overload the ring as effectively its the same socket on the inside that i plug the mower etc into anyway... but is it good practice? Its certainly less work/cost as there will be less cable length and no messing round with the CU (which I am not supposed to really do as I am not a qualified electrician...I'm probably not allowed to do what I want to do with the shed on those partP grounds anyways but it is very simple and have tackled more complex things inside the house.
If anyone could advise on the best method (without getting a spark in to do the job!) that would be fantastic. Also I would like to know what cable I should be using in both instances (must you use SWA cable if the cable is run along the wall of the house above head height? in both situations I am not planning on burying any cables.
An electician friend of my brothers said I could 'get away' with doing the second option but using a plug on the inside, plugged into the livingroom double socket as this is classed as not hard-wired and therefore I am ok to do? Is this true?!
Many Thanks in advance!
Lik
(oops, cable run is no more than 18ft)
