Ext leads & fuses.

But its good enough. It works pretty well as a penetrating oil, a lubricant & a water displacer. Sure you can get individual products that might be slightly better, but WD40 does the job 9 times out of 10.

Hope they are on the same phase :-)

Is that true? I thought it specified a minimum size.

AIUI The Regs specify a minimum size for 32A rings and 20A radials (2.5mm) and 32A radials (4mm) but if you have to increase the cable size eg for thermal or grouping then you use that increased conductor size for the whole circuit.

Owain

I believe on RCD protected circuits the length of a 4mm 32A radial is limited by voltage drop and not the earth loop.

Adam

Ah, yes, it will be since RCD protected. That is quite an advantage since 17th allows 5% voltage drop on power.

But that would be the length from the origin of the installation to each socket, not the circuit length in total?

Owain

Why?

Well that could be the same thing if the sockets are daisy chained with no spurs.

It is the distance to the "farthest" socket that counts when star wiring a radial.

Adam

Ah, yes, it will be since RCD protected. That is quite an advantage since 17th allows 5% voltage drop on power.

The 5% helps on ring circuits as well:-)

When doing rewires there is often a bastard of a socket to fit that will use lots of cable to prevent damage to the decorations or because of the structure of the house. I frequently make these type of sockets a spur from the ring circuit to keep the voltage drop down on the ring circuit.

Adam

That's what I meant.

Owain

When suckered in by the marketing and ease of availabilty.