whats a ROT
1.5mm T&E or 1.0mm T&E?
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Rule of thumb, for someone who critisises other peoples grammer, you tend to do this often
Maybe, but also, if one really did need a 10A circuit (i.e. a load >6A), then if one were eric, 'VD concerns' might start to become a bit of a potential issue with 1mm² cable.
Kind Regards, John.
potential issue
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From an earlier posts, which indicate the current-carrying capacity of 1.5mm² is 20A, it would therefore follow that (assuming no derating) 20A radial circuits *could* be wired in 1.5mm², rather than the more common 2.5mm². I do not know if I would like a 10A load at the end of a radial and a 10A load in the middle with only 1.5 cable wiring it all up! Any comments?
They could/can. In fact, were it not for the fact that the regs require a minimum of 2.5mm² (unless MICC), 1.5mm² (with no de-rating) could even be used for a 32A ring final, since 2.5mm² de-rated to 20A is acceptable for that!
What is your concern? Even if the entire 20A load were at the end of the cable, that would still be OK if the CCC of the cable were 20A, wouldn't it?
Kind Regards, John
It is fine.
Why would you not 'be happy' (there's that 'be happy' again) with it?
Or -
Why have you positioned two 10A loads in those positions rather than a 20A load at the end?
Why would you not 'be happy' (there's that 'be happy' again) with it?
Or -
Why have you positioned two 10A loads in those positions rather than a 20A load at the end?
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^I thought 20A radials were always in 4.0mm.
As previous in the post, replacing 1.0mm Twin (without Earth) with 1.0mm Twin and Earth. Currently all fittings are plastic, therefore the only issue is with light switches screws, its been acceptable for the past 20 years... I could have just been lazy and fitting some nice LAP light switches which have screw hole covers, far far easier.
doing something is better than doing something.
As previous in the post, replacing 1.0mm Twin (without Earth) with 1.0mm Twin and Earth. Currently all fittings are plastic, therefore the only issue is with light switches screws, its been acceptable for the past 20 years... I could have just been lazy and fitting some nice LAP light switches which have screw hole covers, far far easier.
doing something is better than doing something.
If the screws go into nylon threads it's not an issue assuming plastic switches.
No, 4mm² cable has a (maximum) CCC of 37A so you could have a 37A radial if there were a 37A MCB - 32A is the nearest.
Something is confusing you.
You could.As previous in the post, replacing 1.0mm Twin (without Earth) with 1.0mm Twin and Earth. Currently all fittings are plastic, therefore the only issue is with light switches screws, its been acceptable for the past 20 years... I could have just been lazy and fitting some nice LAP light switches which have screw hole covers, far far easier.
I quite like doing nothing.
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Sadly there is a 4-way brown Wylex board with no RCD fitted.
To have a new board (£300 fitted by Leckie), all circuits need a CPC
To have a new board (£300 fitted by Leckie), all circuits need a CPC
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No, 4mm² cable has a (maximum) CCC of 37A so you could have a 37A radial if there were a 37A MCB - 32A is the nearest.
Something is confusing you.
You could.As previous in the post, replacing 1.0mm Twin (without Earth) with 1.0mm Twin and Earth. Currently all fittings are plastic, therefore the only issue is with light switches screws, its been acceptable for the past 20 years... I could have just been lazy and fitting some nice LAP light switches which have screw hole covers, far far easier.
I quite like doing nothing.
We would run a 4.0mm radial off a ring, which explains the 32A, however new radials from the board would be on a 20A, rare to run though due to the cost. Appeared that 6.0mm was cheaper than 4.0mm..
Not true, entirely possible to fit a new consumer unit and connect old non-CPC lighting circuits to it.
Even if the threads are metal, nylon screws can be used.
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