How Many Lights on One Switch? Installation Guide

There are so many types of light bulbs and switches but how do you know how many led lights on one switch? This article will tell you the truth about how many lights on one switch. Fluorescent lights take up a lot of electricity and don’t last very long either. If this is your only option, then it’s best to have no more than two fluorescent lights on one switch in order to save energy. LED light fixtures are much better as they last longer, produce less heat and use less power!

How Many Lights on One Switch?

How many lights do I need on one switch? This is a common question for people that are looking to change their light fixtures and want more information about how many leds, fluorescent or recessed lights they should install.

There is no limit to the number of lights on a circuit. The load of the lights determines how many you can have. A regular 15A circuit can have up to 1400W of lights connected, or one 1400W light or 14 100W light bulbs. Most homes allow for 23 to 40 60-watt bulbs or 280 to 480 5-watt LEDs.

How Many Fluorescent Lights on One Switch

How many fluorescent lights can I put on a circuit? You should be able to put 8 of those on one circuit. Will you overload the circuit? The outlet will not be overloaded either.

Fluorescent lights don’t daisychain. You can wire a bunch of ballasts in parallel, but nothing should be in series. That being said, there’s no reason not to attach lots of ballasts in parallel to a single power supply, as long as you’re under the rated amperage of the circuit. Next problem.

How Many LED Lights on One Dimmer

A rule is 100W for each LED fixture. That means that a 600W dimmer can only handle six LED fixtures. If you keep meeting all the requirements of the light (such as making sure it’s actually getting enough electricity) and it still flickers, then try adjusting the low-end trim.

Dimmers also have a limit on how much power they can handle. If you go over this, the dimmer will break and not work or there will be flickering because of noise. This is because too much current is coming through the wires. The inrush current is when a device has just been turned on and it needs more power to start up so it has more than steady-state current (the amount that flows constantly). Look at the graph for an example of what the inrush current looks like.

How Many Recessed Lights on One Switch

How many can lights per switch? Recessed lights give your room’s ceiling a good look. One fixture with recessed lights are not enough for a room to have light. You need more than one. The number of fixtures you can put in one switch depends on the size and shape of the space, and the size and width of the canister. The wattage also matters too, as does how many bulbs you can put on that breaker.

Breaker limitations & Wall Switch Ratings

Recessed lights give off light that is beautiful. Recessed lights are put into the ceiling, and in order for a room to be well lit, you need more than one fixture. You can make the room have many fixtures because there is no limit on how many fixtures you can add with one switch depending on a number of things like the shape and size of the room, what kind of canister width it has, and how much electricity each bulb uses. The breaker rating also determines how many fixtures you can add. Normal light bulbs are usually 60 watts. The circuit with 240 volts and 10 amps can power 2400 watts. This means that the circuit can handle 40 normal light bulbs at once.

Series Circuits and Fuses

Series circuit lights, like Christmas tree lights, have fuses. If the current flowing through the wire is too high for the cable being used to feed power to it, then the bulbs will blow. The fuse in a series circuit acts as a weak point that will give if there’s just too much current flowing through. The fuse helps prevent fires from occurring and bulb explosions by limiting how much power can go into a particular connection.

To figure out how many lights can go to one switch, you need to know how many watts each lightbulb needs. Then you can put the right size wires and fuses in.

Calculate How Many LED Recessed Lights on One Switch

A switch can allow one to turn on and off lights. A breaker will determine how many lights a switch can handle.

Example Calculation

Take 240 volts * 10 amperes = 2400 watts.

2400 watts / 60 watts = 40 bulbs.

A CFL Bulb vs An LED Bulb

LED and CFL bulbs are different from regular lightbulbs. They give out the same amount of light for a lot less electricity, which is 10 watts or less. Plus, if you have a 15-amp circuit, you can control 180 or more LED or CFL bulbs.

How to Wire Multiple Lights To One Switch

One switch can turn on multiple lights. One way to do it is to connect them with each other and then hook the first fixture up to the switch.

The second way to control all your lights from one switch is by connecting the lights directly to the switch with wires. This is called a “home run” configuration and it’s easy to disconnect the fixtures that you don’t need anymore.

Wiring Basics

If you connect more than one cable to a switch, the electricity will not work. You need to know how to fix one cable before you fix any other ones. A typical 120-volt home circuit has two conducting wires and a ground. One of the wires is black, and it’s the one that transfers electricity from the power source to the load.

The other wire is white. The white wire is the return wire that, when connected, will send power back to the power source. This completes the circuit and lets electricity go through. The terminals of a switch have only black wires because switching interrupts this connection. The terminals are brass to make connections between wires stronger. The black wire from the power source connects to one of the brass terminals. You connect another black wire that’s going to your light fixture to the load terminal. With all of these wires connected, you are left with two white cables. The white wires are the return path. They go around the switch and come back in this way. You join them by twisting their ends and screwing a wire cap on them. Take off the power before you start working with wires or touching them, to avoid getting electrocuted.

How to Daisy Chain Light Fixtures

Daisy-chaining is different from wiring lights in a series. Lights wired in a series go out when one of them fails. In daisy-chaining, parallel wiring is used to fix light fixtures. Standard electrical color-coding is also used, making it easy to use the daisy-chaining method.

If you are adding on an installation that will be at the same location as your other fixtures, then you need one extra cable that can work with your fixture. You will probably put it through the attic and then run the black cable from that to join the other two black wires and repeat this process with ground and white wires.

Do we need larger wire caps? We have more cables in each set and they need to be connected. To connect a new cord, you follow the same steps as before.

How to Home-run Lighting Fixtures

There are two reasons for feeding wires from many light bulbs to one switch. One is convenience, because the switch that is easy to use can control many lights. The other is that the wiring isn’t permanent, and there needs to be a way to disconnect the new light if it’s not needed anymore.

For the home run method, When you want to use a light switch, that operates more than one light, the hot wire goes on the load terminal. The best way is to use a pigtail. This means you twist together all the black wires connected to the fixtures and then screw on a wire cap.

Whenever you wire more than one light to a single switch, use the same process. Connect the ground cables to the ground terminals. As for the white wires, they do not need a pigtail. Twist them together and cap them; then put them in an electrical box that is big enough for all of your cables. When you are wondering how many lights can be on a switch, think about what kind of bulbs you have at home. If they are incandescent bulbs, then only two will work with one switch. Fluorescent bulbs can work with three or four switches depending on how many lights each switch controls – if there is more than one bulb in each fixture and it is connected to two switches then 3-4 lights may work


We have explored how many lights on one switch and how to fix them. Fluorescent, LED and Recessed Switch Install is a great blog post to read for anyone who wants to know more about wiring circuit breakers or installing recessed light fixtures.

You should not be afraid of electricity as it poses no real threat – all that you need is some basic knowledge before touching any wires! Electrical safety can even save your life in the long run, so make sure you are knowledgeable when working with electrical systems. And don’t forget – if you ever feel unsafe or like something could go wrong while doing this work then get professional help from an electrician!

Andrew Orange , the owner of Orange Lighting qualified and worked as an interior designer in 1993 before specialising in lighting working on high profile projects based in London. Since starting Orange Lighting Ltd in 2003 he has been sharing his knowledge and unique teaching style mostly to his designer clients, offering practical real life advice born from running a busy consultancy and lighting supply business. Launching in 2020, his blog has evolved into Quick & Easy Lighting, curating some 25 years design experience into making the lighting choice and design process achievable and easy to understand for all.