Electricity and Water 365 | The Easiest Circuit to Understand for High-Rise Building Stairs. In this video, I will show you how to connect the stair circuit in the most technical and simple way. A stair circuit needs 2 2-way switches (stair switch) to control 1 light bulb. For high-rise buildings, we should separate the stair light branch to control 1 protection circuit. We can turn the lights on and off at any switch. To ensure safety when operating the stair circuit, we must connect the fire wire (phase wire) to the switch.
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