150 Amp Service Ground Wire Size. The hot and neutral wires will be 250kcmil aluminum, while the ground will be a 6awg bare copper wire (this saves on conduit fill). 100 amps #4 awg #2 awg:
What size wire do i need for a 200 amp sub panel? The ground conductor size calculator will calculate the proper ground conductor size for grounding raceways and equipment based on ampere rating or setting of automatic overcurrent protection device in circuit ahead of equipment. Looking at your 150 ampere service as an example (excluding any temperature or other adjustments).
If you are planning on using aluminum wiring, keep in mind that it has lower conductivity than copper.
The work and materials are very similar between 150 and 200 amp. For 300 amp, the right wire size is 500 kcmil. What size aluminum wire do i need for 100 amp service? Above, we mentioned that your shed should use a 10/2 wire when running power from a 20 amp breaker to your shed for 120 volts.