One of the most common questions homeowners and businesses have is: ‘How many power points can a circuit handle?’ The answer varies based on several factors:
- Circuit Load Calculations: Every power circuit has a load capacity. It’s essential to calculate how many devices will be plugged in and their total power consumption. Overloading can be dangerous and is a potential fire hazard.
- Electrical Codes: In Western Australia, electrical codes define the standards for safe electrical installations. They may stipulate limits on how many power points can be connected to a single circuit.
Every power outlet is built to handle a certain amount of electricity, referred to as its ‘load rating’. Typically, the ones you find in residential homes can handle between 10 to 15 amps, based on their specific rating.
On a 15 amp circuit, a good guideline is to allocate 1 outlet for every 1.5 amps, ensuring you stay within 80% of the circuit’s capacity. This equates to approximately a maximum of 8 devices for a 15 amp circuit. But of course, we recommend to stick below this number to stay on the safe side.
It’s common for us to plug multiple gadgets into one outlet (especially by using power boards), and each of these devices adds its own electrical demand to the circuit. When the total demand exceeds the outlet’s load rating because of many devices running at once, that’s when an overload happens.
To read more: How To Avoid An Overloaded Power Point At Home