Answer for USA
The NEC requires that required outlets be installed anywhere from 5 feet high on the wall to as much as 18 inches from the wall on the floor. However, they are typically placed from 12-18 inches high on the wall. This is purely arbitrary, depending on what you think looks best and how accessible you want them to be.
It is important that you note I said this is what is required for required outlets. You can place an outlet anywhere you wish, except face-up in a counter. Just if it does not fall within the measurements I gave above the outlet doesn't qualify for what is a required outlet.
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Before you do any work yourself
on circuits, equipment or appliances,
ensure the circuit is, in fact, OFF.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
There is no code ruling on this. I set mine 12" to center. If you are putting in a new outlet in an existing home I would suggest you just match it to the height of the rest of the outlets.
The recommended height for a washer outlet box is typically around 42 inches from the floor.
The standard height for a bathroom outlet is typically around 48 inches above the finished floor level.
The standard height for a refrigerator outlet is typically around 4 to 6 inches above the finished floor.
The outlet symbol on a floor plan is used to indicate the location of electrical outlets where devices can be plugged in for power.
The standard dimensions for an electrical outlet in the United States are approximately 2.75 inches in height and 1.5 inches in width.
The recommended height for a washing machine outlet box is typically around 42 inches above the floor.
Yes, an electrical receptacle can be positioned three feet from the floor. Counter top receptacles fall into this category.
The required height for installing a bathroom GFCI outlet is typically around 42 inches above the finished floor level.
The recommended height for electrical outlets in a residential setting is typically around 12 to 18 inches above the floor.
The recommended TV outlet height for optimal viewing experience is eye level when seated, typically around 42 to 50 inches from the floor.
The standard dimensions for electrical sockets are typically 2.75 inches in height and 1.5 inches in width.