Interference to LED Dimmers

[Piratepete]

Hi Guys
Scratching my head on this one.
In a kitchen I've installed 3 lighting circuits. -
One row of 4 dimmable Philips 5W Mains LEDs in Downlight fittings
One row of 3 of the same
A switched circuit supplying 2 undercupboard 4W LED strips plus 6 short self adhesive LED strips fed by 3 transformers at floor level.
The 3 circuits are fed from a 3 gang switch plate containing the 2 dimmers (Vpro) and (cupboard)switch

The problem I've got is that if you switch the cupboard lights on while the downlights are on, the downlights go off and then come on again a second later. Why?

It doen't happen every time, and I can find nothing wrong with the wiring.

Cheers
Pete

 

[dmxtothemax]

Sounds like an in-compatibility issue with the two different transformers,
If the cupboard transfomers are iron cored whilst the circuitry for the other LED lights is electronic then i would suspect a start up surge is upsetting the electronic ones. try replacing the iron cored trannys with electronic types. As they tend to have smaller turn on surges when compared to iron cored trannys.