I.S. 10101 - The replacement for ET101:2008

Q about IS10101

I'm just looking up prices of stuff, in advance of getting an electrician to do it properly, but there are few things I might misunderstand

• RCBO-type-AC - are these not still recomended for showers, immersion heaters and induction hobs ?
• 1-pole versus '1P+N' - is that the new recommended thing, to cut off both the live and neutral when theres's a fault? is there and implications for eejits like me occasionally rewiring a socket or light fitting ? (the 1P+N cuold be twice the price it seems)
• cable specs - what should I be looking up the prices of, in terms of (a) fusebox to shower, immersion heater ; (b) to socket loops (c) lighting loops. Lights are of course these days all low power, and conversely there's lots more going onto sockets than a few decades ago.
• - heavy socket cable, IIUC, is supposed to be three insulated cores now, rather than two insulated plus bare earth.
• - also the specs for plastic have changed, low halogen or something. What should I be looking at the prices of ?

thanks in advance

FYI I'm apparently able to ask ChatGPT questions about IS10101

me> are wago-type lever clamo wire connectors acceptable in IS10101

bot> Yes, Wago-type lever clamp wire connectors are acceptable under IS10101. The standard does not specify the use of a particular brand or type of connector, but rather focuses on the requirements for the electrical installation as a whole, including proper connection of conductors. Wago-type lever clamp wire connectors are a widely used and accepted type of connector in the electrical industry due to their ease of use, reliability, and safety features. However, it is important to ensure that the connectors being used meet the appropriate standards for electrical safety and performance.

I wonder if it's true ... ;)