We maintain a standard level/height for electrical appliances in residential building for user convenient. This level may vary in different countries. Here in Bangladesh, we follow the followings-
Standard level for various electrical appliances:
Tube light: Let’s start with light. Bottom of tube light holder in rooms, we keep at 7′-6″ from finished floor level and it is 6′-6″ in bath/toilet. If there is a mirror in bath/toilet then it will be on top of mirror.
Switch board: Bottom level of switch board is at 4′-6″ from finished floor level.
Switch: Combined switch Bottom level of window AC is 5′-0″ from finished floor.
Switch of split AC is kept at Switch Board level or at skirting level which is suitable.
Geyser switch will be at Switch Board level.
Power point: power points are often called socket. We use two types of sockets in residential building – 2-pin socket and 3 pin socket. Which socket is used for what – you know it yourself.
We normally put 2-pin socket at switch board. We also put a 2-pin socket at skirting level (1′ from finished floor) for television power supply.
We maintain different level for different purpose for 3-pin socket. For general purpose, we put 3-pin socket at 1′ level, for kitchen hood at 6′ from finished floor level and for micro oven at 1′ from kitchen work-top.
Calling bell: We put Calling bell at 7′-6″ height from finished floor level.
Exhaust fan: We install Exhaust fan under false slab in toilet. Since we maintain 7′-0″ height for false slab bottom so we can say exhaust fan top-level in toilet/bath will be at 7′-0″ from finished floor level.
We don’t make false slab in kitchen so the bottom level of exhaust fan will be at 7′-6″ from finished floor.
Window AC: Bottom level of window AC is 5′-0″ from finished floor if no beam interrupts. If beam interrupts that will be at beam bottom level.
Split AC: Indoor unit bottom level of split AC is 7′-9″ from finished floor.
Wall bracket: Bottom of wall bracket, we keep at 7′-6″ height from finished floor level.
SDB (sub distribution board) box: We keep top of SDB box at 7′-0″ height from finished floor.
Intercom: We maintain 4′-6″ level from finished floor for intercom set. That means it’s at switch board level.
Others: We also maintain some other standards for electrical appliances. Such as; Distant between TV power point & Internet power point is 6″.
Horizontal Distant between Dish Antenna line & TV power point
Horizontal Distant between internet line & internet power point is 6″ etc.
This standard level isn’t unchangeable. It can be changed as per owner or client’s requirement.
I know you are thinking that this blog is for civil engineers. Then why this electrical post is here! As a professional civil engineer, we often need to work on finishing project and to know this standard level is essential for finishing residential projects properly.