EICR - Help on my Request for Electrical Safety Alternatives and Quotes

Discuss EICR - Help on my Request for Electrical Safety Alternatives and Quotes in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

No 2 although maybe accurate if cables clipped direct 16 amp would be ok, obviously 1.5 is better suited to 10 amp but you could not say for definate a 16 amp MCB is too big for a 1.5mm2 cable, lots of reasons why it may be compliant
 
westward10 said:
Item 4 is questionable. If the radial only serves a single point it is fine but if multiple points it needs addressing.
Click to expand...
It isn't questionable at all, it's just wrong - what reg prohibits a radial and ring sharing an MCB ?
More likely the combination of radial cable size and MCB rating isn't acceptable - e.g. multiple sockets, 2.5mm T&E, B32 MCB. if the MCB were 20A or 25A then it would be fine. If it were 4mm cable it would be fine.
 
Simon47 said:
It isn't questionable at all, it's just wrong - what reg prohibits a radial and ring sharing an MCB ?
More likely the combination of radial cable size and MCB rating isn't acceptable - e.g. multiple sockets, 2.5mm T&E, B32 MCB. if the MCB were 20A or 25A then it would be fine. If it were 4mm cable it would be fine.
Click to expand...
As I said it is questionable and my query was perfectly correct. For you to suggest a 2.5 on a 25A protective device is fine without knowing the installation method is, well, questionable. Not sure how the 32A protective device being type B is relevant.
 
Simon47 said:
It isn't questionable at all, it's just wrong - what reg prohibits a radial and ring sharing an MCB ?
More likely the combination of radial cable size and MCB rating isn't acceptable - e.g. multiple sockets, 2.5mm T&E, B32 MCB. if the MCB were 20A or 25A then it would be fine. If it were 4mm cable it would be fine.
Click to expand...

But if that extra cable only feeds one point then it is not a radial circuit but is a completely compliant spur from the ring.
So yes, it is questionable.
 
davesparks said:
But if that extra cable only feeds one point then it is not a radial circuit but is a completely compliant spur from the ring.
So yes, it is questionable.
Click to expand...
A radial circuit in its own right emanates from a consumer unit or power source, where as a spur is a branch off of an existing circuit
 
DPG said:
But a spur on a ring can be taken from any point on the ring, including at the MCB.
Click to expand...
Then in my opinion it's not a spur.
If it was taken from a point on the ring then it would be a spur.

Would disconnecting the ring from the mcb then make it a radial ?
 
mainline said:
Then in my opinion it's not a spur.
If it was taken from a point on the ring then it would be a spur.

Would disconnecting the ring from the mcb then make it a radial ?
Click to expand...

It is just a part of the ring though - a spur as per the regs.

Yes if you removed the whole ring then it would become a radial with one point.
 
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