How randomly do you mean? Does this happen only during the daytime or at night as well? If your transformer's timer has a photocell and it’s set to “dusk to dawn”, this could occur if the transformer is in a shaded location. We have a regular post light with a photocell. Because it is surrounded by shrubbery, it sometimes flickers or turns on and off (especially on days when the sun goes in and out of the clouds.
I have the same problem. My lights are only on at night "dusk plus 4" and during that 4 hours, each of the six lights along the driveway will independently go on for a while, and then shut off for anywhere from a few seconds to maybe a minute or more, then come back on for a few minutes. Three of the lights are on one hub, connected to one of the transformers, and the other 3 are connected to a different hub and to a second transformer. Each of the hubs also has some spotlights connected, but the spotlights do not go on and off - they are on when they should be and off when the timers are not energized. Anyone have any ideas on why they are behaving this way?
Since the spotlights are working fine, I wonder if the wattage for one or more of the bulbs in the impacted fixtures is higher than the fixture rating recommends.Can you confirm you’re using the correct bulb wattage in each fixture? Btw, what wattage are your transformers and what gauge wiring are you using? Thanks.
Hello all, If an entire system is randomly powering ON/OFF, the best place to start would be with the transformer. If you bypass the timer to leave the transformer in an ON position and all the lights are working, this would lead us to believe that the issue is either related to the timer or possible wire connections (improper splices or damage to a cable). From what it sounds like, it sounds as though everyone here may be using a timer with a photocell. So, the next step would be to test the timer. To test the Photocell device: (In daylight) 1. Test transformer in the ON position first. 2. If the timer works in this setting then, set it to dusk to dawn setting; it should turn off after doing this. 3. You should then cover the photocell in complete darkness for anywhere from 5-6 minutes (using a towel or something that encompasses the entire device is recommended.) After this time, it should power on. (If using the Slim Line transformer which has the timer device built it, you would need to cover the entire glass face of the door to properly test the cycling functionality.) When testing the cycling functionality of the photocell, if it does not cycle properly, the device may need to be inspected. If the device cycles properly when testing but does not do so when applied to your project, the issue is more than likely related to the location of the photocell device in regards to ambient light or, wire connections as previously mentioned. If all of this checks out and you still have troubles with fixtures independently, you would then want to troubleshoot fixtures by swapping out any bulbs you're having issues with for known working ones and even testing fixtures directly at the transformer if needed.
