Discuss Joint between 16mm &1.5mm! in the Electrical Forum area at ElectriciansForums.net

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rolyberkin

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A donut of a builder has helpfully run a piece of swa two core 16mm to a small feature fountain fitted with 1.5mm flex, suggestions on best way to join, couldn’t get the 16mm in a wago!
 
twist and tape. or source a IP rated SFCU.complete with a coffin box 60A connection block.
 
Whats it going into at the other end? In this situation, I can't see any technical reason why just putting one or 2 strands of the 16mm into a wago and cutting the others off. You would probably still have to put heatrink over the end to insulate the rest of them. Not sure how easy it would be to justify/sign off though.
 
Whats it going into at the other end? In this situation, I can't see any technical reason why just putting one or 2 strands of the 16mm into a wago and cutting the others off. You would probably still have to put heatrink over the end to insulate the rest of them. Not sure how easy it would be to justify/sign off though.
I sincerely hope your reply was/is tongue in cheek shaun1.
 
I sincerely hope your reply was/is tongue in cheek shaun1.

Well not entirely no. Obviously I would never consider cutting strands off a cable if it was correctly sized and carrying somewhere near its capacity. But in this case, presumably only a 1.5mm cable is required for CCC, and one strand of a 7 strand 16mm must be more than 1.5mm CSA, so what actual reason is there not to use it in this way providing ita suitibly protected for the 1.5mm?
 
Im DIY so don't shout at me, but I've done something very similar in the past for family who had knocked down an old garage and made garden bigger so wanted to have a light where the garage was.

16mm in to a resin bullet to 6mm SWA (using the screw down and snap bolt crimps) and then fed the 6mm in to a wiska 308 with swa gland and 1.5mm flex out on a compression before for a light.

Resin joint 450mm down, wiska box on a wooden post. MCB downrated to 6a at supply.
 
Im DIY so don't shout at me, but I've done something very similar in the past for family who had knocked down an old garage and made garden bigger so wanted to have a light where the garage was.

16mm in to a resin bullet to 6mm SWA (using the screw down and snap bolt crimps) and then fed the 6mm in to a wiska 308 with swa gland and 1.5mm flex out on a compression before for a light.

Resin joint 450mm down, wiska box on a wooden post. MCB downrated to 6a at supply.
sounds a decent soloution with beer in the brain.let me look agian tomorrow, or the next day, or next year, whenever i run out of beer, .....(that will be the day that i go to my grave/crem/hole in the garden/ whatever SWMBO wants. :eek::eek::eek::eek::eek:.
 
sounds a decent soloution with beer in the brain.let me look agian tomorrow, or the next day, or next year, whenever i run out of beer, .....(that will be the day that i go to my grave/crem/hole in the garden/ whatever SWMBO wants. :eek::eek::eek::eek::eek:.

Crimps did the 16 > 6 in spec, 6 fits in SWA small gland. seemed neatest way i could think of at the time i did it. Cant remember if i wago'd it or terminal strips but 6mm > 1.5mm flex is probably Wago compliant.
 
Well not entirely no. Obviously I would never consider cutting strands off a cable if it was correctly sized and carrying somewhere near its capacity. But in this case, presumably only a 1.5mm cable is required for CCC, and one strand of a 7 strand 16mm must be more than 1.5mm CSA, so what actual reason is there not to use it in this way providing ita suitibly protected for the 1.5mm?
Trouble was Shaun, you were thinking it and then said it out loud!
I could lend you my tin hat but I basically never take it off!
 
What is wrong with a bit of 60A terminal strip in a moulded box and a crimp on the flex.
Gland the SWA into the box and put the 16mm² in one side of the terminal block and the crimped flex in the other.
 
What is wrong with a bit of 60A terminal strip in a moulded box and a crimp on the flex.
Gland the SWA into the box and put the 16mm² in one side of the terminal block and the crimped flex in the other.
And you could place the ferruled end of the flex neatly in the strands of the 16, that would work and be cost effective.
Does it need fusing down or has it been done at the other end (upstream) of the 16mm?
 
Question.
Why did the builder put in 16mm in the first place?
Tell him to dig it up and put in the right size.

or

Tie the cores to a jcb and gently pull it. It will either stretch the 16mm's down to a usable csa, or pull the cores out from within the armour. If that works, then tie a flex onto the other end and pull it in as the 16 comes out.
The "optimistic" badge is below, just about...……………....…. here!
Looks like a rainbow
 
Builder built the fountain and dug in the cable, customer had a load of 16mm 2 core left over from something else, they got their heads together and come up with what seemed like a plan!:tearsofjoy::tearsofjoy:
Think will go with the connection strip or crimp ideas.
 
It is for a pond pump, not a outdoor hot tub, with Pampas grass and saunas :)
It is for a pond pump, not a outdoor hot tub, with Pampas grass and saunas :)
So do you condone that form of butchery then? Should have had the right sized cable installed in the first place, and not left it to a builder,who probably thought "got some 10mm in the shed, I know I'll use that"
 

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