The Electrical Layout Plan

So, what is exactly the purpose of having and keeping the issued electrical layout plan?



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Electrical layout plans are sometimes are on a separate page to make reading them a little easier. By keeping the electrical layout on its own drawing, the electrician can begin wiring the home without reading through the entire building floor plan. Electrical diagrams usually include a legend or key on the page, which explains what each symbol represents. From this diagram the electrician can determine the location of electrical outlets, fixtures, light fixtures etc. Electrical diagrams may also include legends for heating/cooling systems, door swings and sizes. The electrical layout plan that is issued by HDB, is usually the Single-Line diagram.

Prior to start getting quotes from reno companies or IDs, it helps if the new owner can take abit of time to look through the electrical layout first, especially if the unit has concealed electrical wiring by default. For newer flats, usually you can see two layouts on the same page: ceiling layout and floor layout.

If you notice this in the ceiling layout plan: L1, L2, L3 and so on...it means it is the individual lighting (ceiling) point. If you see this in the floor layout plan: P1, P2, P3 and so on....it means it is the individual power point.
At each lighting point circle, you will notice that there's an arrow-like line pointing in different directions. If you trace or follow the direction of the arrow point, it will lead to the nearest switch point.

Count the total number of default lighting and power points based on the electrical layout plan, as this will help you in getting a rough idea how much electrical works will cost you, excluding the projected number of ceiling fans, lights, appliances and additional power points & lightings that you intend to have. At least, you can set aside a comfortable budget so that you are not in for surprises