I'm hoping someone can answer a questions about the best way to
connect two extension cords. Both are 50' long. One is made of 14/3
wires. The other is made with 12/3 wires. My question is which one
should be connected closest to the wall plug? The heavier gauge cord
or should that be the one on the end of the connection as it would
have less resistence?
Any comments and recommendations would be appreciated.
(At the risk of starting another "run or walk through rain" controversy:)
Series AC impedance (unlike DC resistance) is minimized by ordering the
segment impedance to increase towards the load. So put the 14/3 after the
12/3 if you want to be perfect about it. But the AC impedance effect is
trivial in this situation, so it doesn't really matter.
On 28 Apr 2007 15:10:55 -0700, firstname.lastname@example.org wrote:
Unless the device you need to power draws very little power and doesn't care
about voltage, you really should get a proper 10/3 100 foot extension cord. Just
the 50 foot 14/3 is going to have significant losses from end to end. Generally
speaking, in home wiring, you don't want to run more than 50 feet from the
service entrance with 14 gauge wire because of the voltage drop encountered.
That means that a 14/3 extension cord is the minimum size for a 50 foot run if
you plug it in AT the service entrance. If the power is already running through
wiring to the outlet, then you really need the big expensive extension cord that
you are hoping to avoid. Even a single 100 foot 12/3 cord would be somewhat
preferable to the two cords you have now. You can get a 100 foot 10/3 extension
at the big box stores for around $100. A 12/3 for about $50.
Depends on how much an energy hog the equipment is. Putting a 14/3 25'
extensions cord on a small air compressor can cause blown breakers where no
extension cord causes no problem. For a normal 3/8" drill you would
probably not notice much of a difference at 100' if you were not working at
the limit of the drill.
I was going to say "wire nuts" but he probably wants to use the
cords again. I like your logic, to put the lighter cord out where
it's moving around.
Electrically, it's all the same. They are in series.
Christopher A. Young
You can\'t shout down a troll.
Lordy. Go to Sams Club or wherever, spend 30 or 40 bucks, and get a proper
100-foot contractor cord. That is what I did when I noticed the connectors
on the strung-together cords I was using were getting rather warm to the
touch. It is heavy, so it is a workout rolling it up and carrying it, but
all the connections stay nice and cool now. Plus, the GFCI doesn't trip any
On Apr 29, 1:10 am, email@example.com wrote:
No difference, from theoretical electrical viewpoint.
And assuming the voltage is nominal 115 volts.
What are the 12/3 or 14/3 extension cords to be used to power?
If it's a single 60 watt inspection lamp bulb, volt drop
To try and power a 3 HP compressor or something which has an ampere
load exceeding the rated ampacity of #14 AWG, possibly major volt drop
problems especially during motor starts.
Thanks for the quick replies. I appreciate the information. This is
for a fence repair project so I'll be using the cords to power a
battery charger (drill and screw driver) and a portable circular saw
(about 13 amps) for short periods of time (long enough to cut 4" x
3/4" cedar boards to length).
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