Two power cables and a 485 communication cable are laid on the same ditch, but the communication cable has inductive electricity
As a result, two power cables and a 485 communication cable are generally installed in different channels. If the same ditch laying weak, the wire slot and power line slot to maintain more than 30 cm distance.
The same reason two channel laying power cables and a 485 communication cable but there is induction on communication cable line 485 is susceptible to interference, the standard of 1 RS-485 communication cable, the characteristic impedance of 120 ohm conductor 2*24AWG stranded tinned copper wire, PE insulation, made of aluminum foil / polyester composite with 100% coverage a total of 90% + tinned copper wire covering double shielding, with independent grounding wire, in line with the UL 2919 file.
