This will help you select the correct gauge (AWG) of electrical wire for your next electrical project. It can also tell the voltage drop between the source and the farthest end of the wire. It is essential to use conductors of the proper size for safe and reliable power delivery and to reduce the amount of voltage drop in the system. Note: Consult a qualified electrician before installing or altering electrical wiring or components. Results can be sent via text or email as needed.