Also how long has this been fitted?

I would replace net 1 expander 5

are you running this expander 70m on normal cable? and there is still 12.7v at the expander?

Seems like voltage / line length to me. Can you double / treble up the supply cables?

tbh i can't see why he isn't powering the expander from the PSU?

are the expanders powered by local power supplpies, or is the psu by the panel?

I have reconnected the network cables to the panel today and made sure that the power supplies only power detectors and not expanders, they will be powered directly from panel so we will see tonight.

Whats the Voltage at the expander end?

IMHO this is the most important question, I reckon there borderline during the day & the falling temp is marking the current consumption increase ?

good morning. The power supply is at the expander, 1 for each expander. I am running 0,5mm cable for network only. Software shows voltage as reported. Using 4 core 0,5mm cable. Have replaced expander 5 and keypad powered from it. Have a grea day out there all.

hi again. problem seems to be resolved. found this morning that there is a master switch that some person wired that would normally turn of only the lights but in stead turns of all power, including dedicated power circuit, in the new section of the basement.this has never been a problem before, but the cleint had removed the computers from this area, and had it rewired. thanks to ignorance and lack of input this problem lasted this long. thanks for all the input every body, just sorry I had to waste everybody's time, including my own. have a fantastic season.

hi again. problem seems to be resolved. found this morning that there is a master switch that some person wired that would normally turn of only the lights but in stead turns of all power, including dedicated power circuit, in the new section of the basement.this has never been a problem before, but the cleint had removed the computers from this area, and had it rewired. thanks to ignorance and lack of input this problem lasted this long. thanks for all the input every body, just sorry I had to waste everybody's time, including my own. have a fantastic season.

Main thing is you've resolved the 'fault'-just a case of how much you're going to charge them now!.......Seasons greetings, for the update

I was right then #2

That's rare Lol