17th Edition - RCD requirements and concealled cables

[17thman]

522.6.6 will nearly always be employed on a domestic installation and 522.6.7 says "a cable installed in accordance with 522.6.6 (v) and not complying with 522.6.6 (i) (ii) (iii) or (iv) shall be provided with rcd" etc

ie a cable in the safe zone but not mechancically protected by an earthed means. because the expense and problems with 522.6.6 (iv) needs an rcd. lighting to because of switch drops.

 

[GaryMo]

Yep, that's what I'm trying to say!
Domestically 522.6.6 (v) will be the most common method meaning RCD's will be required due to the installation not being under the control of a skilled or instructed person.

 

[17thman]

ah! we are both correct, lets go wire the world