
Which Extension Cords Brand Wins?
In our test we compared 15 extension cords options head to head. US Wire (14 gauge) came out on top. See the measured results, the runner-up, the budget pick, and a link to the full test video.

US Wire (14 gauge)
Price shown in test: $53
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Bergen Industries
Price shown in test: $40
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Vanguard (Harbor Freight)
Price shown in test: $20 (Harbor Freight)
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The quick take
The short version of why each pick lands where it does, built straight from the measured results.
“just looking at average finish ranking, US Wire came out on top with an average finish ranking of four”
Best in 1 of 5 measurements, including Puncture Resistance.
Placed top three in 2 of 4 measurements.
The measured results
Every number below is read straight from the test. Products are listed in the order they finished.
Blade Fold Strength
- 1US Wire 14 gauge
threw in the towel early at 4.7 kg or just over 10 lb
- 2Bergen Industries
moved into the lead at that point in testing with 18.7 kg or just over 41 lb, finished second overall in the final blade strength ranking at 41.3 lb
- 3Vanguardjust over14 kg
or 30 lb
- 4Project Source 16 gauge
folded at only 9.5 lb, weakest blade of all cords tested, using a thin folded metal blade design
- 5Woods
folded at 9.4 kg or almost 21 lb, could not keep up with Vanguard
- 6Yellow Jacket 14 gauge12 kg2nd
moved into second place behind Vanguard at that point
- 7Southwire 14 gauge
almost a full kilogram stronger than Yellow Jacket, moving into second place at that point
- 8Southwire 12 gauge
gave up at just under 6 kg or around 13 lb, using a folded blade design like Project Source and US Wire 14 gauge
- 9Husky13.3 kg
or 29.3 lb, about the same as Vanguard
- 10Utilitech
moved into the lead at that point with almost 18 kg or around 39.5 lb; finished third in the final blade strength ranking
- 11Snow Joe14.5 kg2nd
or about 32 lb, moved into second place at that point
- 12Flexzilla Pro12.5 kg
or around 27.5 lb
- 13Go Green17.1 kg3rd
moved into third place at that point; finished fourth in the final blade strength ranking at 37.8 lb
- 14US Wire Extreme
did extremely well at 21 kg, taking the lead from Bergen Industries; won the final blade strength ranking outright at 46.4 lb
- 15Yellow Jacket 10 gauge14.5 kg
described as good but not directly comparable since it is a different gauge
Socket Grip Strength
- 1US Wire 14 gauge4,502 g
about average
- 2Bergen Industries5,202 g
- 3Vanguard6,318 g
could not hang on quite as well as Project Source
- 4Project Source 16 gauge7,414 g4th
(about 16.3 lb), fourth best in the final socket grip ranking
- 5Woods4,620 g
could not get a good grip on the blades
- 6Yellow Jacket 14 gauge4,454 g
about the same as Woods
- 7Southwire 14 gauge8,818 g
moved into first position at that point; final ranking had it on top overall at 19.4 lb
- 8Southwire 12 gauge2,958 g
threw in the towel early
- 9Husky3,682 g
a little below average
- 10Utilitech4,418 g
performed better than Husky
- 11Snow Joe8,026 g2nd
made Southwire a little nervous, moved into second place at that point; finished second in the final socket grip ranking at 17.7 lb
- 12Flexzilla Pro5,668 g
a little above average; finished fifth in the final socket grip ranking at 12.5 lb
- 13Go Green2,968 g
got going a little too soon (weak grip)
- 14US Wire Extreme3,454 g
about 1,000 g below average
- 15Yellow Jacket 10 gauge5,186 g
Cord End Separation Or Tensile Break
- 1US Wire 14 gauge
moved into a commanding lead at 367 lb; the cord itself broke before the cord end separated, best of the 14 gauge cords
- 2Bergen Industries
cord end separated at 201 lb; tensile strength until the cord broke was 319 lb
- 3Vanguard
tore loose at 192 lb in the plug separation test; made it to 321 lb before the wires began breaking in the tensile strength test
- 4Project Source 16 gauge
the wire broke before the plug end separated, at 190 lb
- 5Woods
cord end came loose at 236 lb, moving into first place over Vanguard at that point; tensile strength until the cord broke was 334 lb, a little better than Vanguard
- 6Yellow Jacket 14 gauge
cord end came loose at 319 lb, moving into the lead over Woods at that point; tensile strength until the cord broke was 423 lb, moving into first place at that point
- 7Southwire 14 gauge
cord end separated at 202 lb, 10 lb better than Vanguard's plug separation figure; tensile strength until the cord broke was only 241 lb, last place among the 14 gauge cords on this test
- 8Southwire 12 gauge
cord end held on longer than the 14 gauge Southwire at 288 lb; tensile strength until the cord broke was 393 lb
- 9Husky
moved into the lead at 346 lb before the cord tore away from the plug; the cord itself broke at 339 lb, about the same as the prior test
- 10Utilitech
cord end outlasted the cord, meaning the wire itself broke first, at 311 lb
- 11Snow Joe
cord end outlasted the cord, meaning the wire itself broke first, at 278 lb
- 12Flexzilla Pro
made it to 257 lb before the cord broke away from the cord end; a separately stated tensile strength figure of 291 lb also appears in the transcript for this brand, the two numbers are not clearly reconciled
- 13Go Green
cord end gave up at 169 lb; tensile strength until the cord broke was 260 lb, described as made of a softer plastic than most other brands
- 14US Wire Extreme
cord end separated at 164 lb; tensile strength until the cord broke was 258 lb, described as not offering very much tensile strength for a thermoplastic elastomer
- 15Yellow Jacket 10 gauge
cord finally broke at 968 lb, by far the strongest tensile figure recorded in the test
Overall Average Finish
- 1US Wire 14 gauge
came out on top with an average finish ranking of 4, the best of the 14 gauge cords
- 2Bergen Industries
averaged 4.4, second best of the 14 gauge cords
- 3Vanguard
not among the top five average finish figures given, but final socket grip ranking placed it fourth at 13.9 lb
- 4Project Source 16 gauge
not among the top five average finish figures given
- 5Woods
not among the top five average finish figures given
- 6Yellow Jacket 14 gauge
not among the top five average finish figures given
- 7Southwire 14 gauge
not among the top five average finish figures given
- 8Southwire 12 gauge
not among the top five average finish figures given
- 9Husky
averaged 4.8, fourth best of the 14 gauge cords
- 10Utilitech
averaged 4.7, third best of the 14 gauge cords
- 11Snow Joe
not among the top five average finish figures given
- 12Flexzilla Pro
averaged 5.1, fifth best of the 14 gauge cords
- 13Go Green
not among the top five average finish figures given
- 14US Wire Extreme
not among the top five average finish figures given, but singled out separately as best for cold weather use
- 15Yellow Jacket 10 gauge
not included in the 14 gauge average finish ranking
Abrasion Resistance
- 1US Wire 14 gauge17.6 seconds
better than average
- 2Bergen Industries22.7 seconds2nd
second best of the 14 gauge cords
- 3Vanguard12.3 seconds
- 4Project Source 16 gauge5.6 seconds
the weakest jacket of all cords tested
- 5Woods14 seconds
moved into the lead over Vanguard at that point, has a hard rubber jacket
- 6Yellow Jacket 14 gauge15 seconds
better than Woods
- 7Southwire 14 gauge8 seconds
described as pretty soft and thin
- 9Husky28.7 seconds
twice as long as the competition, best of the 14 gauge cords on this test
- 10Utilitech17 seconds
- 11Snow Joe10 seconds
jacket described as soft and thin
- 12Flexzilla Pro14.3 seconds
held up well despite being very soft and flexible
- 13Go Green12.3 seconds
described as soft and flexible like Flexzilla
- 14US Wire Extreme20.2 seconds
despite being soft and flexible
- 15Yellow Jacket 10 gauge1 minute 11 seconds
(71 seconds), by far the longest, though the presenter notes this is not a fair comparison due to the heavier gauge
- 8Southwire 12 gaugenot tested
Cold Flex Rating
- 1US Wire 14 gauge
not specifically singled out at either temperature in the transcript
- 2Bergen Industries
not specifically singled out at either temperature in the transcript
- 3Vanguard
not specifically singled out at either temperature in the transcript
- 4Project Source 16 gauge
rated 1 (best) at 70 degrees Fahrenheit
- 5Woods
not specifically singled out at either temperature in the transcript
- 6Yellow Jacket 14 gauge
the only cord jacket in the whole test that cracked in the minus 40 degree Fahrenheit test
- 7Southwire 14 gauge
rated 1 (best) at 70 degrees Fahrenheit; rated 3 (distant second tier) at minus 40 degrees Fahrenheit
- 8Southwire 12 gauge
rated 3 (distant second tier) at minus 40 degrees Fahrenheit
- 12Flexzilla Pro
rated 1 (best) at 70 degrees Fahrenheit; rated 3 (distant second tier) at minus 40 degrees Fahrenheit
- 13Go Green
rated 1 (best) at 70 degrees Fahrenheit; rated 3 (distant second tier) at minus 40 degrees Fahrenheit
- 14US Wire Extreme
rated 1 (best) at 70 degrees Fahrenheit; by far the best at minus 40 degrees Fahrenheit, the only cord rated 1 at that extreme temperature and very easy to work with
- 9Huskynot tested
- 10Utilitechnot tested
- 11Snow Joenot tested
- 15Yellow Jacket 10 gaugenot tested
Puncture Resistance
- 1US Wire 14 gauge3,268 g
the best of all cords tested
- 2Bergen Industries
not among the top four figures given
- 3Vanguard
not among the top four figures given
- 6Yellow Jacket 14 gauge1,599 g4th
fourth best of the top figures given
- 9Husky1,989 g2nd
second best of the top figures given
- 12Flexzilla Pro1,788 g3rd
third best of the top figures given
- 4Project Source 16 gaugenot tested
- 5Woodsnot tested
- 7Southwire 14 gaugenot tested
- 8Southwire 12 gaugenot tested
- 10Utilitechnot tested
- 11Snow Joenot tested
- 13Go Greennot tested
- 14US Wire Extremenot tested
- 15Yellow Jacket 10 gaugenot tested
Voltage Drop 14 Ga Showdown
- 1US Wire 14 gauge
came out on top with a voltage drop of only 4.36 V
- 6Yellow Jacket 14 gauge4.45 V
drop, close to the top of the 14 gauge group
- 10Utilitech4.4 V
drop, close behind US Wire
- 11Snow Joe4.44 V
drop
- 2Bergen Industriesnot tested
- 3Vanguardnot tested
- 4Project Source 16 gaugenot tested
- 5Woodsnot tested
- 7Southwire 14 gaugenot tested
- 8Southwire 12 gaugenot tested
- 9Huskynot tested
- 12Flexzilla Pronot tested
- 13Go Greennot tested
- 14US Wire Extremenot tested
- 15Yellow Jacket 10 gaugenot tested
All measurements (1 more)+
Voltage Drop
- 4Project Source 16 gauge7 V
drop over 5 minutes with four halogen lights connected, wire temperature rose about 33 degrees Fahrenheit (69.8 to 102.8 F), over 100 W converted to heat instead of reaching the lights
- 8Southwire 12 gauge2.85 V
drop, around 2 V better than the 14 gauge wires, temperature rose only 1.9 degrees Fahrenheit
- 15Yellow Jacket 10 gaugeabout1.9
to 1.94 V drop, wire temperature remained very cool
- 1US Wire 14 gaugenot tested
- 2Bergen Industriesnot tested
- 3Vanguardnot tested
- 5Woodsnot tested
- 6Yellow Jacket 14 gaugenot tested
- 7Southwire 14 gaugenot tested
- 9Huskynot tested
- 10Utilitechnot tested
- 11Snow Joenot tested
- 12Flexzilla Pronot tested
- 13Go Greennot tested
- 14US Wire Extremenot tested
How it was tested
- blade fold strength test
- extension cord socket grip strength test
- plug to cord end separation force and tensile strength until cord breakage
- belt sander jacket abrasion resistance test with a 5 lb weight
- voltage drop and temperature rise test with four halogen lights over 5 minutes
- cold temperature flexibility rating at 70 and minus 40 degrees Fahrenheit
- jacket puncture resistance test
“just looking at average finish ranking, US Wire came out on top with an average finish ranking of four”


