Another thing to look at when using a power strip or extension cord, is the size of the wire and the voltage and amperage ratings. It may take things a long time to reach their final temperature. As its name implies, a power strip is composed of a series of electrical sockets with a cable and electrical plug at its end. Use the right cord to avoid overheating or electric shock. Plug the extension cord directly into the outlet. Only if the extension cord is grounded and has both the 3 prongs on the male side and three prong receptor on the female side. I have been running various multiple extension cords setups for ages, without the slightest problem. If anything is getting hot, then take steps to reduce the load on it, or at least investigate further. Could you please edit the comment about the resistivity into your answer? Is a public "shoutouts" channel a good or bad idea? Does a Disintegrated Demon still reform in the Abyss? The danger (if there is any) is that something will overheat and fail or start a fire. Larger appliances, such as microwaves and refrigerators, All extension cords, power strips, multi-outlet adapters, and UPSs. Use appliances the cord can handle perfectly. However, there are some things to keep in mind: If you only plug low current devices into the extension cord there should be no problem. I plug mine into a surge protected power strip all the time, but I do that with all my device power supplies anyway when at home or work. It is o.k. It mostly comes down to length, as extension cords can only be so long—the longer the cord, the more electrical resistance, which decreases the amount of electricity that can be fed to devices. Never use a three to two prong plug adapter! What is the 'malty' flavour added to tea to make it taste like biscuits? @MasonWheeler: you have to consider the maximum current rating of each item in the circuit, which may be much less than the rating of the circuit breaker feeding the outlet. This plugs into a wall outlet and is considered a power strip even though it doesn’t have a cord. Also, do not connect multiple extension cords together. If they aren't, then most likely, all is well. • You do NOT plug anything else into the same power outlet as your refrigerator. However, after the fact, I am reading on websites about weather or not this is safe, and they're all saying it's not, even though everything is running perfectly fine. Relevance. An example of acceptable extension cord use would be a custodian using one with a vacuum to clean a hallway carpet. You run the risk of overloading your system and starting a fire. To save my battery can I plug my iPad pro charger with prongs into an extension cord to reach wall outlet while using? Also consider external factors (like the heat from the sun) when calculating the maximum load, I once had a thermal fuse trip inside a rolled up cable when it was using less than 1A (at 220V). And in case it just crossed your mind, Portablepowerguides discourages you from solving this problem by plugging one extension cord into another extension cord. @Kurja (I copied your edit to my answer as a comment): Apart from heating cables or connectors, a primary safety concern with an extension plugged into an extension of any type is that overall resistivity can become so large that even a full short at the furthest end of the cable may not trip a breaker. Trying to bypass the ground on the power strip at worst can cause a fire and bare minimum can harm your computer by not being able to protect it from power surges. Wondering if the range extender can be plugged into an extension cord or power strip, or does it have to be plugged directly into a wall outlet? To power all of the equipment I use, I use a pretty expensive surge protector, with 12 outlets on it. You can plug a power strip or extension cord to a surge protector to provide protection to all your electronics provided you do not overload the surge protector. Voltage will normally not be a problem since this is (more or less) stable in a country. Also make sure that your smart plug isn’t so heavy that it’s weighing down the extension cord and making the connection loose. How to decline politely? A downloadable PDF depicting the Flexible Cord Examples below is also available. Surge protector outlet with altered grounding potential, Using a Main Surge Protector for only branching out other surge protectors. [closed], I followed my dreams and got demoted to software developer, Opt-in alpha test for a new Stacks editor, Visual design changes to the review queues, 2021 Moderator Election Q&A - Question Collection, Is it possible to repeatedly use a schottky diode at its surge current without damage. Below are photographic examples of the above rules for clarification. As I see this question, this is not an "how to use an extension cord" question. Into these outlets, you can plug extension cords, power strips, or electronics directly into the generator. Can You Plug Extension Cords Into Another Extension Cord? Thoughts? To be honest, I do it all the time. The Electrical Safety Foundation International says space heaters can overheat a power strip, as well as an extension cord, and potentially cause a fire. Another potential problem is that if the outlet is equipped with an earth-leakage circuit breaker safety device, that may also trip "on it's own" as the current in neutral wire is diminished due to excessive resistivity in the circuit. Of course, extension cords, plugs, sockets and similar "electrical connection things" follow Ohm's law and Joule's law. Maybe, I thought, I could plug some of the things on my surge protector into the extension cord, and then the extension cord into the surge protector. If you have questions about the amount of equipment that may be plugged into an outlet or power strip, contact EH&S. When is it better to use the backquote, `(…), and when to use (list …)? So it would plug in in this order: 100 or so watts of CFLs (pulling very few amps I imagine) -> 15 amp timer -> 13 amp extension cord -> surge protecting power strip -> power outlet. Since you are a technology enthusiast, you simply MUST have a thermal imaging camera or thermal imaging adapter for your mobile phone. In any case, you need to keep the total current requirements of everthing plugged into the surge protector and extension cord below the rating of the surge protector. I know, it's pretty dumb of me, but I went and did it, without checking to see if it was safe first. Don't forget when you switch on an extension cord (either by plugging it in, or by using a switch if there is on), ALL devices will be powered on at the same time, using possibly some additional extra current. Another potential problem is that if the outlet is equipped with an earth-leakage circuit breaker safety device, that may also trip "on it's own" as the current in neutral wire is diminished due to excessive resistivity in the circuit. Do not plug an extension cord or power strip into it. Improper use of flexible and temporary wiring such as extension cords, multi-outlet adapters, uninterruptible power supplies, and power strips can present both. So manufacturers don't take any chances. It is not as safe as using the power bar directly into the wall. They might even catch fire. Power strips, multi-outlet adapters, and uninterruptible power supplies (UPSs) are acceptable. If the power strip needs to be at the end of the circuit, plug the extension cord into the wall outlet, and then plug the power strip into the receptacle end of the extension cord. When you go towards the maximum current supported by the extension cord or in a warm environment or radiation (e.g. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. If the power strip needs to be at the beginning of the circuit, plug the extension cord into one of the outlets on the power strip. -Never use an extension cord on a any type of space heater. • You do NOT use an extension cord. You can do it with surge protectors and power strips as well. rev 2021.2.10.38546, The best answers are voted up and rise to the top, Electrical Engineering Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. This is some sort of scarecrow tactic from the manufacturers (and rightly so, IMO). Plug the power strip into the wall outlet. :-D. Leaving whether it is safe or not (or widely practiced or not) to the others, I'll mention that in my U.S. jurisdiction the fire martial doesn't like it and made everyone in my company reconfigure practically every office to avoid this or face penalties. Is it Safe to Plug an Extension Cord Into a Power Strip? Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It allows a 3-prong plug to be plugged into … What are the dangers of operating a mini excavator? If you only plug low current devices into the extension cord there should be no problem. This latter is particularly important to calculate heating. In any case, you need to keep the total current requirements of everthing plugged into the surge protector and extension cord below the rating of the surge protector. -Space heaters draw heavy amperage and should always be plugged directly in to the electrical wall outlet. Answer Save. Not able to add fulfillment if Cart Line count is one in Sitecore Commerce 9. Simple and hopefully foolproof. If your refrigerator is too far from the power outlet, move your refrigerator or have a electrician install a plug closer to your refrigerator. Show me the reaction mechanism of this Retro Aldol Condensation reaction. Power Strips or Surge Protector? Space heaters must be plugged directly into a wall outlet, which can handle a higher wattage, and should be the only item plugged into that wall outlet. Nekteck [UL Certified] 8 Feet Power Strip Extension Cord [2 Pack] 360 Degree Rotating Angled Flat Plug with 3 Electrical Power Outlets, 16AWG 3 Prong Grounded Wire 4.8 out of 5 … The following is a list of rules for proper use of extension cords and power strips at TWU. And it’s also against OSHA and NEC regulations. Do not modify the power plug. Sorry to disagree with the closing reason. I'd read somewhere that for surge protectors specifically, there are obscure reasons that it's not safe to plug one into another even with. If you really want to know how many devices you can plug into a power strip, you need to know the amps, voltage and wattage rating of the strip. The key here is to choose the right extension cord based on the wattage or the current or (amperage) rating of your toaster oven. 2 Answers. But I did, and everything seems to running fine. Coworker is trying to get me to sign his petition to run for office. Whilst they may or may not work, they will most often not give the best signal even if they do work, and powerline adapters work far better when plugged directly into wall outlets. Manufacturers must design their product and the included instructions around the (possibly dumbest) average consumer. temporarily to plug an extension cord to a power strip, but never a power strip to an extension cord. Ideally, you should not create a chain of power cords rather you should invest in a surge protector that has enough outlets and a cord length of your need. Again, technically you can, but it’s not recommended, as it’s considered a fire hazard. Can a Hydra make multiple opportunity attacks at once? xreginabethx is correct. Power strips can easily heat up so the material melts. They tell you the simplest possible rule to use their products with safety: "One extension cord (adapter plug, or whatever) to one socket, no multiple adapter/extension things joined together". From my experience, if the Wemo is plugged into the wall outlet and you plug an extension cord into the Wemo plug, Alexa, or whatever smart speaker you have, will turn on the entire cord. The more devices you run with the power strip, the more power is used. from the sun), make sure the cable is fully unrolled (meaning not bundled), since warmth cannot spread (updated according comment of FerryBig). Recently, I have been very plain and simply, running out of outlets. This aspect is often unknown or overlooked, and as a comment it does not get enough visibility. Average people, sadly, have very little understanding of how electricity works: they confuse power, voltage and current all the time, let alone knowing what Ohm's law or Joule's law are! Special Note: Some people do use “Heavy duty extension cord for space heaters” and say it is safe as the extension cord is a “heavy duty” type. 1 decade ago. It only takes a minute to sign up. Apart from heating cables or connectors, a primary safety concern with an extension plugged into an extension of any type is that overall resistivity can become so large that even a full short at the furthest end of the cable may not trip a breaker. Stop. Plug space heaters directly into a wall outlet. Problem No.1 was with remote controls. To the left is a 3-prong-to-2-prong adapter (also known as a “Cheater Plug”). If you plug a light duty extension rated at 5 Amp into the wall, then plug a 15 amp surge protector into that, you should not draw more than 5 amps total. I love everything from software to hardware, Windows to Linux, Computer to Phone, and everything in between. If you are using the power strip (or extension cord) properly (one plug per outlet, no adapters, no daisy chaining) and you inspect the power strip for damage (wear & tear) regularly, you should not have much to fear. Fantasy novel series about a Russian prince, Can the oath to the monarch be "honestly" removed in the British Parliament. Update the question so it's on-topic for Electrical Engineering Stack Exchange. current is most important, sum up all devices you connect on that extension cord AND all devices on extension connected to the the first extension cord. Something I'm not understanding? I have an extension cord with 3 outlets on it. The following is a list of rules for proper use of extension cords and power strips at TWU. Instead of buying an extension cord, get a power strip with a cord of sufficient length. No, it is not okay to plug refrigerators, microwave ovens, space heaters, or any other high amperage appliance into a power strip. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Due to the variety of outlets available and the high wattage of some generators, you can plug almost anything into them directly. The NEC and most local electrical codes, in fact, do not permit the use of one extension cord or power strip plugged into another. Why did these two ethernet switches die (again)? When using electrical equipment, including extension cords. Do not use an extension cord or power strip, which could overheat and result in a fire. "Normal" people could watch my setups and cower in terror (if they are sane), or they could do the same and burn their house down, because they can't tell the electrical difference between a 4W power pack and a 1500W toaster!