This is just an update to my previous posts here.
I found some good information on the Internet about LED operation. Basically, “even when a LED lamp is completely disconnected on one side, it can still glow.
If the switch is situated between the neutral line of mains and the lamp, there will be a 60Hz voltage difference between the conductive parts of your fixture and the surroundings. These surroundings have a potential (earth) close to the neutral line of your mains supply.
There is a small parasitic capacitance between the wires of the lamp and the surroundings. This will conduct a small current. This current will not flow through the return line of your mains, and is not detected by a Watt-O-meter. A LED lamps needs very little current to start emitting light.”
So I decided to make an experiment by connecting only two LED bulbs, or alternatively one LED bulb and one incandescent bulb to the same LC2 circuit. In the alternative scenario the load was definitively higher due to the fact that I was using a 100W incandescent bulb.”
The results achieved were the following:
1) Connecting a single or two identical 7-watt each LED bulbs to the B&O LC2 Lighting Switch produces the same results : both bulbs ignore ON/OFF actions of the switch and flicker at the same time;
2) Connecting one 7-watt LED bulb and one 100W standard resistive incandescent bulb to the B&O LC2 Lighting Switch produces the expected results: the ON/OFF action performs accordingly. The only drawback is that the 7-watt LED bulb emits a strong permanent buzz.
(I confirmed that - with the switch in the ON position and both bulbs lit – as soon as I start unscrewing the incandescent bulb the 7-watt LED bulb starts flickering).
So from the above it is clear that an additional resistive load is required in the circuit for the LED bulbs to perform well by “ignoring” the presence of the disruptive small energy.
At this stage I would give consideration to additional alternatives on the LC2 side. However, since I am ignorant on the technical details of the LC2 and don’t know where to download a technical manual may be someone here that is technically skilled can provide me with answers to the following three questions:
1) Where is the switch action placed on the LC2: on the phase (mains) or in the neutral wire?
2) If on the phase, can this be changed to the neutral by simply symmetrically exchanging the leads in the terminal screws of the LC2 (i.e. P1 to P2 & P3 to P4, and vice versa)? Any impact on the programmable functions of the LC2 (assignment of lamp number, etc.)?
3) Can be the LC2 modified (and how) in order to act as double pole switch and disconnect both phase and neutral when in the OFF status?
I hope to find as usual good inputs on this forum.
Many thanks to all!
Ribeiro