I will be running 100 amp service from the house to my shop. The house run is around 52' across the ceiling through the wall down to the ground then under ground about 73' then up the garage wall & into a 100 amp sub panel. I have googled this & talked with friends with a lot of options. My thoughts are since I have plenty of plastic conduit just running 2-2-2-4 aluminum URD Dyke from box to box all inside conduit. I'm familiar with the many options splicing from sheathed to burial because of codes against burial inside the house & not running sheathed inside of conduit. I can get the 2-2-2-4 URD Dyke for around $1.22 ft & since I have plenty of conduit I think this would be my best option. I would like to start digging soon. I have most of the wiring done inside the shop. Please any suggestions before I buy the wire & thanks!
I have a 110 line already under ground but need 220 for compressor & welder. My thoughts were to eliminate this 110 line because some hack ran a 14 gauge wire inside of a 1/2" conduit totally not thinking that day.