Chongqing Fuse Cell
The location you are looking for is on level 1 and is near the laundry. You can sneak in through the window easily. Either ignore the guys, or take them out if you want to – there’s a place to dump the bodies at the bottom. Next, you’ll want to head down the stairs, you will find a crowbar that you should pick up. You’ll also find a fuse cell.
The second fuse cell is on the third floor, and it’s not as easy to find as the first one. You can see the location in the second image (below)
Good luck, Agent 47!