How do you wire a red yellow brown white wires to a Black Green and white?

Answer for UK, Europe and countries running a 50 Hz supply service.

It all depends on which connection you are using. Alternating Current (AC) or Direct Current (DC). In AC there are generally two modes of transmission. Single Phase or Three Phase. In case you don't have 3-phase connection just combine yellow and green.

According to Standard, Green is for the Earth Wire and Red is for the Live wire. Blue or Black is for the Neutral Wire. So best option is to combine the Yellow and Green.