Can I plug an extension cable into another extension cable?

Question

There's only a single plug socket in my bedroom which I already have one extension cable plugged into. Problem is, the cable only reaches one side of the room so would it be alright if I plugged another extension cable into the one I already have?

Answer 1

You need to mimic the wall wiring to remain safe. If the breaker is 20 amps, then it would be hard to overload it in a bedroom with "normal" things plugged in. You're safe with your lamps, cell charger and television HOWEVER, if you're running a mini-fridge, blow dryer or microwave, you're going to overload the circuit. Extension cord WIRING is rated by the wire size and load that can be put on it. If you use a power strip WITH overload protection, then it will pop if the circuit is overloaded. This protects the house wiring, not your equipment. Think of it like the strings of Christmas lights which warn you not to "install more than 4 strings together." It because that wiring is really skinny and can't take the power load. Extension cords that are just as thick as a lamp cord, won't take a heavy load. The manufacturers make the cords a certain size for a reason. So,if you're using a power strip, the extension cord wire should be as thick as that short power cord to the strip.

Answer 2

There are a few problems with doing this.



The first is that you have cords running all around the room, to step on and trip over. When a cord gets stepped on too many times, it can get worn and frayed, and pose a fire hazard. Also, tripping on a cord can pull down appliances, creating a fire or injury hazards; especially with things like heaters, halogen lamps, or hot-plates.



Another problem is that using multiple extension cords can allow you to plug in more appliances than the circuit is designed for. The circuit will (typically) break at about 1700 watts, but it is possible that the extension cords are not rated for that kind of power. You should check the ratings of the extension cords, and the ratings of any appliances you have connected.



To avoid these problems, modern building codes require that outlets in living areas be positioned every eight feet. You may have an older building, or your bedroom was not originally intended as a living area, or perhaps you just have sloppy and unpermitted electrical work.



If the outlet you do have is sound, one challenging DIY project is to extend it with surface-mounted electrical conduit around the room. You'll need to get a permit and follow all the codes, of course.

Answer 3

Yes, but be sure that both the extension cables are rated for the power draw of whatever you're plugging into the extension cord. Let's say it's a hair dryer and it is rated at 1200 watts. Be sure both cables are rated at 10amps or more.



If the amperage isn't written on the thing you're plugging into the extension cord, then you can figure it out by dividing the wattage by the voltage. 1200w / 120v= 10amps

Answer 4

You certainly can. However, to be safe, you would have to make sure that both of the cables have enough current-carrying capacity ("ampacity") for the loads you're plugging in at the end or at each juncture. If you're plugging in things that stay on all the time, you need a cord that has 125 percent of the required ampacity of the device, just like you would need a branch circuit rated for at least that amount.

Answer 5

What are you going to have plugged into the extension cable?



If it's something low draw, it may be safe. Otherwise you would be better off with a longer cord.

Answer 6

While doable its only recommended for temporary use. The best option would be install new outlets or run surface mount. Ull need to make sure both are at least 14awg wire. Any thing smaller is unsafe and can burn up if there's too much current draw.

Answer 7

You should not. The thickness of the wire in the cord is reduced in size from the size of wire feeding the outlet, and intended for use the length the cord only. If you connect cord to cord you essentially double the safe length of the cord.