You should use ducting if so but bear in mind bend radiuses. I have done something similar though through needs so understand the difficulty.
I tend to use "swept bends" rather than 90° or elbow and for 45° or similar, bend the conduit.
For the uninitiated - not you Seb!
Swept Bend
Elbow
an Inspection Elbow such as
This can be a little tighter and the removable cap allows you to ease the fible or cable round.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
M H C
taurus excreta cerebrum vincit