Worklist:
Fit the power indicators.
Fit the power indicators.
Continue to wire-up control panel.
A full house and the first job was to fit the two power indicator units that Geoff had been working on in the week. These turned out to be neon lamps, so they were simply replaced with LED's to go with the resistor & diode unit Geoff made the previous week. However, when trying to test the lamps, the existing panel power supply couldn't be used as, although the same type of fitting, one plug is male and the other female. A rigged-up supply proved the lamps worked, but if the idea of duplicated power and controls is to be maintained, a new plug and socket is required. Geoff will do some research.
Work on the panel next, with Geoff and Stephen working on the same elements, from opposing ends.
The principles:
Separate 12vDC supplies to the section switch lights and point switches. The zone power selectors determine either the Main panel or Local panel to feed all sections within that zone together with a centre-off.