30 amp cable size : electrical wire size, 60 amps practical garage door Panel diagram subpanel sub amp wiring square grounding 100 main wire install size electrical service garage detached 400 building run What size wire should i use to run 100a 70 feet through an attic to a
400 Amp Meter Base Wiring Diagram - 2 - Installing 400 amp meter base
![400 Amp Meter Base Wiring Diagram - 2 - Installing 400 amp meter base](https://i2.wp.com/www.practicalmachinist.com/vb/attachments/f11/246418d1546987516-what-size-wire-400amps-20170322_120925.jpg)