
How to wire Tesla Remote Meter to TWC via RS485
I installed a Tesla Wall Connector last year on a 30A circuit, bringing my garage subpanel to its capacity (98A on a 100A panel). Now I'd like to install the Tesla Power Meter so that I have headroom to install a 240V HPWH, and if necessary to update the TWC to 40A or 50A to support a second EV.
My question is how to wire the RS485 cable.to the TWC. I'd prefer to not fish the RS485 through the EMT conduit. It appears it's permissible to wire it separately but my question is how to enter the TWC. The bottom knockout is available, but I can't find a clear answer on whether that's permissible.
The Tesla doc itself only says:
"• Use 16 AWG shielded twisted pair cable to extend RS485 harness as needed.
NOTE: The 600V-rated cable must be used if this wiring is to be run through the same conduit as the
power circuits (if not, 300V-rated cable is sufficient)."