1)隧道、人防工程、有高温、导电灰尘或灯具离地面高度低于2.5m等场所

1)隧道、人防工程、有高温、导电灰尘或灯具离地面高度低于2.5m等场所的照明，电源电压应不大于36V。<br>2)在潮湿和易触及带电体场所的照明电源电压不得大于24V。<br>3)在特别潮湿的场所，导电良好的地面、锅炉或金属容器内工作的照明电源电压不得大于12V。

1) For lighting in tunnels, civil air defense works, places with high temperature, conductive dust or lamps less than 2.5m above the ground, the power supply voltage shall not be greater than 36V.<br>2) The lighting power supply voltage in wet and accessible places shall not be greater than 24V.<br>3) In particularly humid places, the lighting power supply voltage working on the ground, boiler or metal container with good conductivity shall not be greater than 12V.

1) For lighting in tunnels, civil air defense projects, places with high temperature, conductive dust or lamps with a height less than 2.5m from the ground, the power supply voltage should not be greater than 36V. 2) The voltage of lighting power supply shall not be greater than 24V in damp and easily accessible places with charged bodies. 3) In particularly humid places, the voltage of lighting power supply working in well-conducted ground, boiler or metal container shall not be greater than 12 V..