Next month, I need to install a 20 Amp circuit under a mobile home. After reading this thread, I decided to buy my materials now. Last night, I verified the stock at the local Lowe's and printed out my materials list. This morning, bought my materials - EXCEPT - the 10 foot sticks of 1" PVC conduit were out of stock, already sold out. I was not the only one looking for 1" conduit. Got luck, Ace Hardware still had enough PVC conduit. If there are critical items needed for the completion of your project, consider buying them now.