Wire through cinder block

drjay9051

I am relocating my washer dryer. I need to run the wire through cinder block than about 20 feet outside and back in through wood. Questions as follows:
1. Where the current outlet for dryer is located is about 4 plus feet above ground. I will be putting a vanity here (currently w/d is in bathroom). At this height the box will not be in the vanity cabinet so I think I need to lower it so its not visible and enclose in a junction box. What is cleanest way to go through cinder block? I know to drill hole but how do I "attach" the conduit on the cinder block? Is there some sort of threaded fitting?

2. Once I have the wire outside and in conduit do I run above ground to new location in conduit or just bury some sort of waterproof line (romex?) below ground and than come up at new location?

3. Lastly, instead of dealing with a new junction box at lower height to be hidden in cabinet can I splice new wire use wire nuts and just hide behind paneling I am putting up? I know code probably calls for a junction box but if I do work myself do I need to follow code?

Thanks

oberkc

Here is how I would respond to a few of these:

Hammer drill or chisel or both. I would also run through conduit.

Tapcon screws are my favorite.

This sounds like a cosmetic question to me. Either works. I would put either in conduit. Putting in conduit allows a more shallow burial depth, I believe (pending confirmation from the code experts). As I understand it, wire would need to be rated for wet location regardless.

Doing work oneself does not relieve oneself of the legal obligation to follow code. I would also suggest that, in this case, code compliance is a good idea (safety).