Now read H5 which makes this thread pointless.
Could you paste it in the thread Westy - in case we haven't got books with us
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Discuss Immersion fuse or MCB? in the UK Electrical Forum area at ElectriciansForums.net
Now read H5 which makes this thread pointless.
Could you paste it in the thread Westy - in case we haven't got books with us
Straight in the bin?I predict the thread will take another tangent now.
Where does it say this in the 17th Ed.The 16A breaker off a ring is mentioned in the OSG in the 17th edition. A double socket is designed to run at 20A which can be off a final ring. So there can be a point off a ring drawing more that 13A. A 16A MCB off a ring draws less.
Did you play the black knight in Monty Python and the holy grail?So…..
The current draw will remain the same whether it's a 13amp fuse or a 16amp mcb.A 16A MCB off a ring draws less.
Any advantage, no matter how small, would make a DP superior to SP.Of course not, but I thought that went without saying. In the average UK installation on the public supply single pole isolation is acceptable and safe.
No, the question was around the OPs statement that DP MCBs offer superior protection to SP MCBs.
Obvious why? In the average UK installation, where the neutral is reliably and solidly connected to earth at source, there is little advantage to DP over SP isolation.
I'd wager that the majority of DP isolators are installed purely due to that being the only kind available rather than any technical requirement to break the neutral.
No it will not. A double socket is rated to draw 20A (it can draw 26A), yet they are are ubiquitous on rings. That is one point off a final ring. A 16A MCB, one point off a final ring, draws less than a common double socket.The current draw will remain the same whether it's a 13amp fuse or a 16amp mcb.
No it will not. A double socket is rated to draw 20A (it can draw 26A), yet they are are ubiquitous on rings. That is one point off a final ring. A 16A MCB, one point off a final ring, draws less than a common double socket.
On the Continent all breakers in the CU are dp. It is abundantly obvious dp is superior.Any advantage, no matter how small, would make a DP superior to SP.
One advantage would be safe local isolation.
There are other advantages, but I really can't be bothered arguing about the obvious.
If you plug a 3 amp load into a 100 amp circuit, it will draw 3 ampsNo it will not. A double socket is rated to draw 20A (it can draw 26A), yet they are are ubiquitous on rings. That is one point off a final ring. A 16A MCB, one point off a final ring, draws less than a common double socket.
The outlet doesn't draw anything, it's the appliance that draws the current.No it will not. A double socket is rated to draw 20A (it can draw 26A), yet they are are ubiquitous on rings. That is one point off a final ring. A 16A MCB, one point off a final ring, draws less than a common double socket.
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