Hello, I hope everyone is fit and well.
I have been doing some work in an intake building that is really an old locked wooden shed at the edge of a holiday chalet park. The original installation dates back to the early 60s. Modern distribution boards exist that may be 30 years old.
The metering is via three current transformers. The single insulated wiring, about 1.5mm2 that runs from the current transformers goes to the metering equipment in a steel enclosure, and is open to touch at shoulder height.
Also, there are three spring loaded test switches and three neon indicators in the metering enclosure that test the presence of three phases.
Three supply phase cables (6.0mm2) run in insulated and sheathed cables to three 16 Amp. "slide lok" fuses carriers on the surface outside the metering enclosure. Open to touch, but insulated and sheathed. From the three fuses the wires seem to be single insulated instrument wire, open to touch, that run to the metering equipment enclosure test lamps.
Was this ever normal? Three single insulated 400 Volt wires running at shoulder height, not enclosed, surface run, open to touch.
Z.
