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Light point is connected with
Single pole switch
Double pole switch
Intermediate switch
ICDP switch
Single pole switch
A light point in a residential or commercial electrical installation is controlled by a single-pole switch to safely interrupt the 'Phase' or 'Line' conductor. This ensures the lamp holder remains de-energized when the switch is in the 'OFF' position.
A light point in a residential or commercial electrical installation is controlled by a single-pole switch to safely interrupt the 'Phase' or 'Line' conductor. This ensures the lamp holder remains de-energized when the switch is in the 'OFF' position.
P=V├ЧI├Чcos╧Х тАФ Instantaneous power consumed by the light point
The single-pole switch is connected in series with the phase wire feeding the light fitting. When the switch is closed, the circuit is completed, allowing current to flow to the load. When opened, it isolates the phase wire from the load, preventing electrical shock hazards during bulb replacement.
Single-pole switches must always be connected to the phase wire, never the neutral.
Connecting to neutral would leave the light fitting 'live' even when switched off, posing a severe shock risk.
This arrangement complies with IE Rules regarding safety and isolation.
Cost-effective and simple wiring
Provides essential safety isolation
Cannot control a single load from two different locations
Residential lighting circuits
Small appliance control
ICDP (Iron Clad Double Pole) switch is generally used as a main distribution switch, not for individual light points.
Intermediate switches are used in staircase wiring where control is required from 3 or more locations.
A is correct тАФ A single-pole switch is the standard device used for the independent control of a light point.
Always remember the rule: 'Switch the Phase, Ground the Frame, and connect Neutral directly to the load'.