Lock Your Fuse Box - securethebeast Lock your fuse box to prevent a thief from cutting your power. An inexpensive padlock is all you need to secure the fuse box outside your home. It's easy to forget that none of the technology in your home will work if a thief switches of your electricity because you didn't lock your fuse box . You can't do much about city-wide blackouts fromAuthor: Aaron Landing locks on electrical fuse box and water main (houses, live Jun 14, 2011Yup, you can lock up your breakers. You cannot put a lock on any utility maintained meter or meter box, but that should be a no-brainer. The reason there is a lock on the water main is so the utility company can lock water off, not so you can lock it on.