Help drilling hol through thick top plate for conduit.
Been trying to drill through that top plate for my 2 inch conduit. For some reason, it looks extremely deep. Like it is 3 or 4 2x4's thick. I used a spade bit with a long extension just to get a small hole. I will have to install the conduit in small sections with pvc couplers because of ceiling height. (No room to drop a 10 foot section in without hitting the roof). So the hole will need to be the diameter of the coupler which is about 2 3/4. Also, where i need to put the hole is right beside 2 electric wires that drop down this wall into the panel.
What is the best, easiest way to cut this hole and to ensure it