The Fact That The Distribution Board Was Not Installed In The Junction Box Caused A Potential Hazard To The Wall Switch.

When the distribution board is not properly embedded in the junction box, the cable connection points behind Wall Switch may lack the necessary physical isolation protection. Concealed wiring locations must be reliably covered to prevent live parts from contacting surrounding flammable materials. Molten metal fragments may splash onto nearby walls or decorative surfaces, causing localized burns or more serious fires.

This wiring method may also subject the wire connections inside the wall switch to long-term mechanical stresses such as vibration and thermal expansion and contraction, increasing the probability of poor contact. High-impedance connections may cause localized heating due to heat accumulation, further accelerating insulation aging and switch component fatigue.