Raul no this is not a standard practice and is most likely the result of improper installation of electrical attic wiring.
Electric wire in attic.
It is best to screw a wire connector over the end of the wires and cover the box with a blank plate as you have mentioned.
The attic wiring should be protected and secured to ceiling joists or other wood structural supports.
Tracing electrical wiring in walls can be tricky and it involves more than just looking for the wires themselves.
Domestic help and advice needed for wiring new lights in attic.
This is a two person job you need a helper at the other end to feed the wires into the conduit.
Yes this should be corrected and it would be good to have the wiring and all the circuit connections inspected as well.
Pull the wires through the conduit.
Electrical wiring theories and regulations.
How to run wire through an attic step 1.
This is usually a moveable piece of drywall or plywood that covers a rectangular hole in.
To figure out exactly where the wires are you ll look f or the outlets and appliances that each wire connects to.
Placing a fold of electrical tape over the end of a unused wire is fine in a temporary situation but not as a long term solution.
The national electrical code nec outlines specifications for securing nm cable and other electrical wiring.
To help you understand which electrical protection goes where consider what each type of breaker was designed to do and make sure to follow the national electric code.
Domestic attic lighting not working what s wrong with the wiring.
Measure the distance between the two sites you want to run wire between and make sure you will have enough wire.
You ll need two wires one white and one black for one circuit or more if you intend to wire a three way switch from the house or add more than one circuit.
Find your attic access.