What size cable is needed?
- Thread starter mdbalson
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Also I am going to have a piece of 4core SWA going from the shed to the side of the garden, which will be to fed the pond pump, & for the set of LV Garden lights, which will be going around the patio.
(I was going to use two of the 4 cores for each thing, So it would be: Two sets of Live & Neutral cores, and then use the Steel Armor as the Earth.)
The length of this cable would be about 20m from the shed to the top of the garden.
So would I need 1.5mm 4core SWA OR 2.5mm 4core SWA.
(P.S. I was going to use 4core SWA to power two things, because it will cut down on the no. of SWA's running up the garden from the shed. (There would be 4 SWA's running up the garden from the shed by using two pieces of 4core SWA, instead of ten pieces of SWA if I did not use two pieces of 4core SWA)
(The SWA's will be one 2.5mm 3 core SWA for a waterproof socket on the patio, one 1.5mm OR 2.5mm 3core SWA for three 150w Floodlights on the veg patch, one 1.5mm OR 2.5mm 4 core SWA for the the 3ft Fluro. in my little brother's playhouse, & for the set of LV Garden lights, which will be going down the side path, & one 1.5mm OR 2.5mm 4core SWA for the pond pump, & the other set of LV garden lights (which will be around the patio))
(I was going to use two of the 4 cores for each thing, So it would be: Two sets of Live & Neutral cores, and then use the Steel Armor as the Earth.)
The length of this cable would be about 20m from the shed to the top of the garden.
So would I need 1.5mm 4core SWA OR 2.5mm 4core SWA.
(P.S. I was going to use 4core SWA to power two things, because it will cut down on the no. of SWA's running up the garden from the shed. (There would be 4 SWA's running up the garden from the shed by using two pieces of 4core SWA, instead of ten pieces of SWA if I did not use two pieces of 4core SWA)
(The SWA's will be one 2.5mm 3 core SWA for a waterproof socket on the patio, one 1.5mm OR 2.5mm 3core SWA for three 150w Floodlights on the veg patch, one 1.5mm OR 2.5mm 4 core SWA for the the 3ft Fluro. in my little brother's playhouse, & for the set of LV Garden lights, which will be going down the side path, & one 1.5mm OR 2.5mm 4core SWA for the pond pump, & the other set of LV garden lights (which will be around the patio))
First off, have you notified your council about any of the notifiable work you've done or are planning?
Now to what you are doing here.
From the mpost I believe you want to
Install an SO on your patio. Why are you feeding this from your shed?
This would be a much easier job feeding from inside your house.
As for the restore your question, why are you so intent on complicating what you do? This has been mentioned in earllier posts.
Why don't you run the 3 spost and the playhouse light as a single circuit?
You may even be able to include the pump on this circuit, but worst case is 2 circuits.
Your proposed use of 4-core is mis-using the cable. It is not designed to supply 2 separate circuits. Think about the loads and how they affect your cable. This is not the first time you've asked about 4-core this way and the answer is not going to change. You can't use SWA as a substitute for conduit.
I've said a couple of times that you are not ready for the jobs you are undertaking. I don't know how far through your course you are, but suggest you raise your questions with your lecturers.
Now to what you are doing here.
From the mpost I believe you want to
Install an SO on your patio. Why are you feeding this from your shed?
This would be a much easier job feeding from inside your house.
As for the restore your question, why are you so intent on complicating what you do? This has been mentioned in earllier posts.
Why don't you run the 3 spost and the playhouse light as a single circuit?
You may even be able to include the pump on this circuit, but worst case is 2 circuits.
Your proposed use of 4-core is mis-using the cable. It is not designed to supply 2 separate circuits. Think about the loads and how they affect your cable. This is not the first time you've asked about 4-core this way and the answer is not going to change. You can't use SWA as a substitute for conduit.
I've said a couple of times that you are not ready for the jobs you are undertaking. I don't know how far through your course you are, but suggest you raise your questions with your lecturers.
newspark_paul said:
The shed is closer to the patio then the house.
newspark_paul said:
I was going to do it this way, so that, the indival things can be switched on or off seperatey from each other.
newspark_paul said:
What way can I do it then, so that the pond pump, the playlights & the two sets of LV lights, can have their own switches in the shed, so that they can be turned on or off seperatey from each other
You have 4 separate loads, which you want to switch independently in your shed. Therefore, you have 4 circuits. If you don't understand why your proposal won't work, just ask.
Why have you not raised this at college?
Why have you not raised this at college?
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newspark_paul said:
I don't think MDB goes to college if he can't calculate cable sizes.
He does however have a penchant for electrical DIY.
Having read all his posts, "one sandwich short of a picnic" springs to mind.
He has said he's a student, having mentioned working on a Starbreaker in the booth. I hope he takes some notice of the advice he's had or he could end up injured (or worse).
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