See diagram re supply to 6+6 rooms in 2 seperate buildings. Should there be MEN links in Control Box B and CUs B1-B6?
To explain, Electrician has made MEN links in Control Box A and all Consumer Units A1 to A6 (1 CU per room). Control Box B just added by new electrician but he didn't make a MEN link in it nor in the CUs B1-B6. Both Control Boxes have their own earth rod and the boxes and rods are 20 meters apart.
Should there be MEN links in Control Box B and/or CUs B1-6 ?
Thanks.