At first glance I thought depth , as in buried cable, then I thought of metallic construction meaning the cable as in pyro and swa .
In metallic construction with regards to the depth of cable, what are RCD's required for?
a. Lighting only.
b. Sockets only.
c. RCD required for everything irrespective of depth.
d. RCD's are not required. [/color]
That to me is confusing. Anyone else agree?
Was the answer D then.
Rf
i asked here, and someone said it is an open exam and you can take your books in, some of the courses give you the book in with the course fee apparently