Is this Intermediate switching image from the Student's Guide wrong?

nicebutdim · Jul 21, 2023

rewireIT said:
I get ya i think - so the top left image of how it switches is unconventional? What does it normally look like? I want to learn the common way which is applied to most switches and now feel like i can't really trust the guide i bought.

I mean i get how it's working in terms of the wiring, but it was GSH's comment here that completely threw me since he makes it sound like a rule.

I've never seen a switch that was configured for anything other than one cable in top terminals and other in the bottom, but that's not to say other arrangements don't exist and there's no reason why they shouldn't.

The guide you have has shown everything correctly, albeit in what could be considered an unconventional manner. It's worth remembering that exams are similarly devised, with questions intended to determine whether a candidate is paying attention, and understanding what is in front of them, or simply repeating mantras they've been taught.

snowhead · Jul 21, 2023

The intermediate in the GSH video is shown changing over differently to the one in the first post on this thread,
so his statement is correct for his switch / drawing.

[ElectriciansForums.net] Is this Intermediate switching image from the Student's Guide wrong?

rewireIT · Jul 21, 2023

snowhead said:
The intermediate in the GSH video is shown changing over differently to the one in the first post on this thread,
so his statement is correct for his switch / drawing.

View attachment 109502

But would this be the normal way most switches would do it? Is the guide i'm using (IET Students Guide to the Wiring Regs) using an uncommon switching pattern to demonstrate an intermediate switch?

Taylortwocities · Jul 21, 2023

The wiring isn't done like that for the (common) loop in at lamp method. In fact, the student diagram is from wiring that was done a very long time ago.......

nicebutdim · Jul 21, 2023

Taylortwocities said:
The wiring isn't done like that for the (common) loop in at lamp method. In fact, the student diagram is from wiring that was done a very long time ago.......

A lot of loop in wiring is done in exactly this manner in NI and for good reason. I'm of the opinion it's important that students learn this method as it will be very common outside of domestic installations in GB.

rewireIT · Jul 21, 2023

Taylortwocities said:
The wiring isn't done like that for the (common) loop in at lamp method. In fact, the student diagram is from wiring that was done a very long time ago.......

You mean GSH's diagrams or the one from the book?

Loki · Jul 21, 2023

lightwiring.co.uk has good diagrams like this one

davesparks · Jul 22, 2023

Taylortwocities said:
The wiring isn't done like that for the (common) loop in at lamp method. In fact, the student diagram is from wiring that was done a very long time ago.......

It does state that it is the conventional wiring method as commonly used in commercial and industrial installations.

A lot of commercial and industrial installations are done in conduit and singles so will be wired using conventional 2 ways rather than switch conversions.

I last wired a 2 way like that yesterday, I wouldn't call that a very long time ago.