Adding a new ring with one wire?

[Steve]

Fabgav, your 16A circuit breaker (not 'miniature, unless it's a BS 3871, by the way).

What does the M stand for then?

moron?

 

[ban-all-sheds]

I refer you to the reply above.

You're just trying to trick me by starting a reply after me, but finishing before.

 

[dingbat]

I refer you to the reply above.

You're just trying to trick me by starting a reply after me, but finishing before.

Ooh, that's far too complicated for me!

 

[dingbat]

Fabgav, your 16A circuit breaker (not 'miniature, unless it's a BS 3871, by the way).

What does the M stand for then?

moron?

Oi! I resemble that remark!

 

[fabgav]

lol, you lot are nuts on here!


thanks all thoughit been a great help.

i can go get on with this side of things now, but will have questions later no dout.

cheersa again

 

[Steve]

Fabgav, your 16A circuit breaker (not 'miniature, unless it's a BS 3871, by the way).

What does the M stand for then?

moron?

Oi! I resemble that remark!

moron / dingbat
tomato / tomayto

 

[Paul_C]

(The manufacturers still call 'em MCBs, but that doesn't mean they are correct. In case you think me too pedantic, these are the same manufacturers who think that the 'L' on a socket terminal means 'live', but what can you do, eh? Believe it or not, many sparks think the same... but then they also believe there is such a conductor as a 'main earth' We have a long way to go...sigh...)

It doesn't exactly help when the "official" terminology in the Wiring Regs./BS7671 keeps changing, like ELCB to RCCB to RCD, or ECC to CPC.

Or when the definition of a term suddenly alters, as with "live conductor."

 

[ebee]

"Or when the definition of a term suddenly alters, as with "live conductor.""

This definition has not changed in 30+ years to my certain knowledge, however some terms like SELV & IP , I'll give yer that

 

[Paul_C]

This definition has not changed in 30+ years to my certain knowledge

What's your definition then?

 

[ebee]

Any conductor that normally carries current as part of it's intended function, except by convention a PEN (CNE) conductor.

Ie - N is Live & Ph is live

 

[Paul_C]

Any conductor that normally carries current as part of it's intended function, except by convention a PEN (CNE) conductor.

Ie - N is Live & Ph is live

Yep, the changed definition. Here's the old definition quoted directly from the 14th edition:

Live. In relation to a conductor, means that under working conditions -

(a) a difference of voltage exists between the conductor and earth, or

(b) it is connected to the middle wire, common return wire or neutral wire of a supply system in which that wire is not permanently and solidly earthed.

NOTE. - For the purpose of these Regulations, an earthed neutral conductor is deemed not to be a live conductor (see also definition of Neutral conductor and Note to Regulation 3).

 

[dingbat]

But, by definition even then (and the 13th Edition says the same) the neutral conductor was a live conductor.

 

[Paul_C]

But, by definition even then (and the 13th Edition says the same) the neutral conductor was a live conductor.

You'd better read it again.