Thanks for the replies, a pre installed transmitter would be nice.
Some inverters have the Tigo RSS transmitter embedded in their design (EG4 18KPV does, I think). I don't believe the So-Ark does.
I have 2 sol ark 15k’s in my basement and my rooftop solar panels are on a barn that is approximately 150’ away.
Sol-Ark gives guidance in their manual:
Page 22.
There are some issues with their guidance, however, when it comes to the Tigo RSS.
First, they show it being powered by the 12 VDC output of the inverter, but the Sol-Ark 12 VDC is rated for 100 mA and the Tigo RSS requires a 1 amp supply. So the Tigo RSS cannot use the inverter 12 VDC output. This means you must use the external power supply powered by the LOAD service panel.
Second, they show the induction coil on the positive lead of the PV wires and Tigo shows it on the negative lead. I'm not sure it really makes a difference, but I would go with Tigo's guidance.
Sol-Ark guidance:
Wondering if I can mount the transmitter in basement with sol arks or does it need to be closer to panels in barn ?
In the basement would be the best setup, I would think. The distance is not an issue, it is not a radio transmitter but a powerline transmitter that induces the signal on the PV wires.
I don’t have extra wires pulled if it needs to go at barn location and then back to sol arks. I have 6 strings, 3 going into each inverter, trying to figure out best way to proceed.
Buy a single coil transmitter, a 12 1+ amp power supply, and run the negative PV leads through the coil and connect the power supply to the LOAD panel. Mostly like the diagram above except I'd run the negative PV leads through the coil.
I would not wrap the wires twice, or wrap both the positive and negative wires, I would follow Tigo's guidance here.
Mike C.