Photo: Felicity Tai

How many receptacles can be on a 15 amp circuit?

8 outlets Technically, you can have as many outlets on a 15 amp circuit breaker as you want. However, a good rule of thumb is 1 outlet per 1.5 amps, up to 80% of the capacity of the circuit breaker. Therefore, we would suggest a maximum of 8 outlets for a 15 amp circuit.

waypointinspection.com - How Many Outlets Can You Put on a 15 Amp Circuit? - Waypoint Inspection

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Technically, you can have as many outlets on a 15 amp circuit breaker as you want. However, a good rule of thumb is 1 outlet per 1.5 amps, up to 80% of the capacity of the circuit breaker. Therefore, we would suggest a maximum of 8 outlets for a 15 amp circuit.

National Electrical Code & Outlets

The National Electrical Code (NEC) does not limit the number of outlets per circuit. The NEC only states that a circuit cannot supply more than 80% of the circuit breakers limits. This is so the circuit breaker does not constantly trip during regular use. So, if you have a 15 amp circuit with 20 outlets, you should be fine as long as you are not running more than 12 amps through the circuit at one time. While this would be an extreme case, read further to find out how many amps you may use on a circuit.

How Many Amps Will I Use?

To find out how many amps you need or how many you will use, use this formula: 80%*(Amps) = Watts/Volts. Also, you should know modern-day U.S. outlets run on 120 volts (unless it is a special appliance connection like a dryer). So, if you are using a 15 amp circuit and you are using regular 120-volt outlets, then the max watts you can use is 1440 watts. This ensuring your circuit does not supply more than 80% of the total 15 amp circuit. All electrical appliances like TVs, chargers, and lightbulbs should state their wattage on the packaging so you can just add up the expected wattage from each appliance to get your total wattage for the circuit.

How Many Outlets Are In Most Bedrooms

Most new construction bedrooms have an outlet every 6 feet, or on every wall. They would also have a junction box on the ceiling for a light and fan. For example, a master bedroom could have 7 outlets, and then a light fixture at the ceiling for a fan. All while, being on a 15 amp circuit.

Final Thoughts

While there is no direct rule for how many outlets you can have on a 15 amp circuit, you should not have more than 1440 watts of power plugged into those outlets at one time. Again, a good rule of thumb is 1.5 amps per outlet, but stop at 80% of the total circuit breaker amperage so the breaker does not trip constantly. In the case of 15 amps, we recommend a maximum of 8 outlets. During our home inspections, while we do not count the specific number of outlets in any given room, we will ensure the amperage per room is appropriate. For example, a kitchen should have more than a 15amp breaker.

If you have further questions, be sure to comment below!

Learn about preventing power surges or how many outlets can you put on a 20 amp circuit.

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Can PEX be used for electrical conduit?

Pex tubing or any other plumbing pipe is not listed for use as an electrical raceway. If you just want some physical protection for the Cat 5 cable then PVC electrical conduit will perform nicely. Save your scrap pex for a plumbing project.

diy.stackexchange.com - Using PEX as wire conduit - Home Improvement Stack Exchange

Because this is an indoor run, I'm not entirely sure why conduit would be helpful, except in eventually pulling more cables, as you mention. That said, I pulled CAT6 through 3/4" PEX, and that was difficult. If you have 1/2", you're not likely going to be able to pull it through at all if it's terminated, and you probably can't get any more cables in there afterward.

Overall, I don't see a point to it.

If you wanted to do it, you could. You could probably use a PG fitting to connect it to boxes on either end. Keep pull tape in the PEX so you can pull more easily in the future. It helps to have twice the length of the run so you can hold it on either end, attach your cable, and pull without losing the pull tape on either end.