I have installed a second HPWC in my garage and I'm upgrading my circuit to a 100a to feed both chargers. I plan on putting the signaling wire between the two - the manual calls for an 18awg TP shielded wire. Does anyone know what the best wire to use for this is? I have tons of CAT5e and CAT6 wire around, but it's all 22 or 24 AWG. Looking into 18AWG wire, I find that the TP variety is unreasonably and ridiculously expensive, whereas the non-twisted version is super cheap. What kind of signaling is going through those wires and does it really need a twisted wire? Is the signaling that fragile that a little interference is going to cause it to fail? Any experience that people have with the install of multiple HPWCs would be great, or any suggestions on how to proceed! Thanks!