What is deemed an acceptable method for splicing wires?

Using a wire nut or approved connector is considered an acceptable method for splicing wires due to several key reasons. First, wire nuts and approved connectors are designed specifically to create secure electrical connections while ensuring safety by providing proper insulation and protection against short circuits. They also facilitate ease of installation and maintenance, as the connections can be easily joined or separated without the risk of damaging the wires themselves.

In contrast, other methods such as simply twisting wires together can lead to unreliable connections and increased resistance over time, compromising both safety and performance. Using electrical tape alone does not provide a secure mechanical or electrical connection, leaving the splice vulnerable to environmental factors that could lead to failure. Likewise, soldering without insulation is inadequate as it leaves the connection exposed, which can lead to shorts and potentially create fire hazards. Therefore, utilizing a wire nut or approved connector is the optimal choice for ensuring both safety and reliability in electrical work.