Yes, people can splice wires behind drywall, but it is generally not recommended and may violate building codes in many regions. Splicing wires behind drywall can be hazardous and should only be done by a licensed electrician or a professional who understands electrical safety and local regulations.
The reasons why splicing wires behind drywall is discouraged include:
Safety concerns: Amateur splicing can lead to improper connections, which can result in electrical hazards like short circuits, electrical fires, or electrocution.
Code violations: Many building codes require electrical work to be done in accordance with specific guidelines to ensure safety. Splicing wires without proper junction boxes and connections can be a code violation.
Accessibility: If there is an issue with the spliced wires or the connection needs to be modified or inspected in the future, it will be challenging to access the splices behind the drywall without damaging it.
Increased risk of damage: Splicing wires behind drywall can increase the risk of accidentally cutting or damaging the wires during future renovations or repairs.
If you need to extend or modify electrical wiring, it's essential to hire a licensed electrician to ensure the work is done safely, meets code requirements, and minimizes the risk of potential problems in the future. Electricians have the knowledge and expertise to make proper connections using junction boxes and appropriate wiring methods, ensuring a reliable and safe electrical system.