How Many Downlight Fixtures Can be Use Together?

The led recessed lighting is the latest and most popular lighting solution today, because of the hidden design. But, you also need more than one to adequately illuminate a room at the same time.
The optimum number of led recessed downlight for a particular space depends on many factors including bulb wattage, canister width, and room shape and dimensions. Today, I am going to solve the problems about the installation of the recessed downlighter.

How Many Recessed LED lights on a 15 amp Circuit

When comes to the installation of the led recessed ceiling lights, we inevitably consider how many recessed led lights can be installed on a 15 amp circuit. And the actual number of the lighting depends on the current in amperes drawn by each light. As a matter of fact, the inrush current of 240 volt led downlights is usually 20 amps. Therefore, a 15 amp circuit allows accommodating 180 LED fixtures for safe.

How Many LED Lights Can Be On A 20 Amp Circuit?

Technically, we could install 13 outlets or led recessed ceiling lights, but, per circuit should only accommodate 10 led recessed lighting for the purpose of the 80% rule of maximum continuous load.

How Many Amps Do A LED Recessed Lights Draw?

It depends on the wattage of your led downlight fixtures. Usually, Each fixture with a 60-watt incandescent or halogen bulb draws about 1/2 amp, so a 15-amp breaker for a standard lighting circuit would be able to handle 30 of them.

How to Calculate Amps Drawn?

But how to calculate the amps the led downlight fixtures draw. As a matter of fact, almost all the downlights have a number on them that tells you how much power the bulb needs. Therefore, you could accordingly know how much power it needs and the current is drawn by looking for this number. For example, the 5 watt led downlights are labeled the number 5-watt. Then, a 5w led downlight draws about 5 divided by 110, or 0.045 amperes.

What is Wattage?

In a simple word, a “wattage” is a measure of power and is used for measuring how much power something uses. In the lighting field, it could be used for measuring how many amps a bulb will draw when turned on or how many kilowatts an entire electric grid produces at any given time.

What is AMP?

The AMP, also known as ampere, indicates how much electric current a power source can provide at that moment. It is very important to know how many amps your recessed downlight indoor will draw when turn on because it helps you figure out how large of a transformer you'll need for the house.

What is Voltage?

The voltage is the pressure from an electrical circuit’s power source that that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating light. In brief, the voltage=pressure, and it is measured in volts(V). Generally speaking, not all the countries use the 110 voltage. Some countries, like China, adopt 220v as the power source for electrical devices.


All n all, figuring out how many indoor led downlights you can run on a 15 or 20-amp circuit is a simple exercise and help you plan out any extensions you want to make to the electrical circuits of your home. If you don’t want to get bothered by this issue, you could consult the manufacturer who you brought recessed ceiling lights from.