I am adding a 60 AMP subpanel for a detached garage/workshop with a 200 foot underground conduit run from the main panel to the sub panel. Planning to use schedule 40 PVC. I have consulted with a local electrical inspector and determined that I should use 2 2 2 4 Aluminum THHN/THWN. However he recommends 3 inch conduit which is 3x the price of 2 inch, adding over $600 to the job. The rationale is that the pull will be easier. The run has two 45 degree bends underground. I am thinking 3 inch may be excessive - Would 2 inch conduit be acceptable?
If I went to a 100 AMP sub panel it would require 2/0 AWG. which is 23% fill for 2 inch conduit. I am considering using the $ I save on conduit and doing that. Any concerns with that pull?
If I went to a 100 AMP sub panel it would require 2/0 AWG. which is 23% fill for 2 inch conduit. I am considering using the $ I save on conduit and doing that. Any concerns with that pull?