Im setting up a system of relays to control 230v AC from a 5v dc relay with a 12v one in between. Phase 2 - Phase 2 wiring should be orange. The common color code for three phase in on or behind the wall electrical wiring is shown below.
US DC Wire Color Code.
Neutral - Neutral wires should be grey. US AC Wire Color Code. For a more visual way to show the international wiring color codes for DC power weve created this DC Power Circuit Wiring Color Codes infographic. Normally I use gray for the COM.
