I built the distribution panel today, see below. The other cables are external and while the two leaving for the garden room and house are SWA there are two 25mm tails coming in the from meter box via the main isolator in the meter box, directly behind this panel, and I am wondering of I need to mechanically protect them in trunking or some such? Also I have stripped back the tails I have used in this panel far enough to ensure you can see the cable colours outside the housings of the switches etc - it feels like the right way to do but is this the right way to do it?