One suggestion was that the Light output of the lamp shining onto the red phase cable has a deteriorating effect in the form of ultra-violet radiation?
Which is due to slighting "open" design of surface mounted 6ft LG3 luminaire.
I have a problem with a batch of flouresecnt lights with LG3 Diffusers installed on a steel clad insulated ceiling.
On inspection the wiring around the choke/ballasts tends to be brittle and cracked. The terminals on the choke are brown in colour. Quite strange is how the red phase wiring is...
3 phase Residual current devices.
Can someone explain how an unbalanced 3phase supply can affect the operation of an 3ph RCD when the system has its own earth leakage caused by computer equipment
