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### Topic: What is thickest gauge wire that can be inserted into Arduino headers? (Read 9061 times)previous topic - next topic

#### encryptor

##### Nov 20, 2012, 04:43 am
What is thickest gauge wire that can be inserted into Arduino headers OR breadboard?  The standard I see is 22 gauge, however if I'm going to buy more wire I want the most amp for my buck!  Can 22 gauge wire support up to 1 amp?

#### Osgeld

#1
##### Nov 20, 2012, 05:33 amLast Edit: Nov 20, 2012, 05:36 am by Osgeld Reason: 1
depends on voltage and how long you run it (heck "they" say you can run an amp though 30 gauge) ... though none of the parts on the arduino can sustain an amp for long

#### retrolefty

#2
##### Nov 20, 2012, 05:54 amLast Edit: Nov 20, 2012, 05:56 am by retrolefty Reason: 1

depends on voltage and how long you run it (heck "they" say you can run an amp though 30 gauge) ... though none of the parts on the arduino can sustain an amp for long

Only the wire insulation is a factor in it's maximum voltage rating, not it's current rating, which is only dependent on its gauge thickness regardless of the voltage used in a circuit.

Here is a current Vs gauge chart that might help the OP:

http://www.cablesandconnectors.com/wiregauge.html

Quote

The following chart is a guideline of ampacity or copper wire current carrying capacity following the Handbook of Electronic Tables and Formulas for American Wire Gauge. As you might guess, the rated ampacities are just a rule of thumb. In careful engineering the voltage drop, insulation temperature limit, thickness, thermal conductivity, and air convection and temperature should all be taken into account. The Maximum Amps for Power Transmission uses the 700 circular mils per amp rule, which is very very conservative. The Maximum Amps for Chassis Wiring is also a conservative rating, but is meant for wiring in air, and not in a bundle. For short lengths of wire, such as is used in battery packs you should trade off the resistance and load with size, weight, and flexibility. NOTE: For installations that need to conform to the National Electrical Code, you must use their guidelines. Contact your local electrician to find out what is legal!

Lefty

#### fungus

#3
##### Nov 20, 2012, 12:57 pm

depends on voltage and how long you run it (heck "they" say you can run an amp though 30 gauge) ... though none of the parts on the arduino can sustain an amp for long

You can, but that doesn't make it a good idea.

For starters you'll have quite a voltage drop along the wire.

No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

#### Grumpy_Mike

#4
##### Nov 20, 2012, 04:19 pm
There is not much point in getting thick wire as you should only draw 40mA or less from an arduino pin. Anything you can plug in will take that.

#### MichaelMeissner

#5
##### Nov 20, 2012, 06:41 pm
I bought some hookup wire initially from Radio Shack that I had trouble fitting in some breadboards (as I recall, the female pins in the Arduino itself were ok with the larger wire).  Eventually after getting 22 gauge wire, I recycled it, so I don't remember the exact size, but I believe it was 20 gauge.

#### NavyVet1959

#6
##### Aug 21, 2017, 11:40 pm
What is thickest gauge wire that can be inserted into Arduino headers OR breadboard?  The standard I see is 22 gauge, however if I'm going to buy more wire I want the most amp for my buck!  Can 22 gauge wire support up to 1 amp?
18 gauge wire is definitely too large.  I have a 500 ft roll of 18/2 though that I used for controlling the lawn sprinkler solenoid valves at my house and I still have a LOT of it left, so I try to use it whenever possible.  It *can* work in the Arduino headers, but you really need to swage it a bit and reshape it into a square.  Filing it down slightly also works.  The 24 gauge wire that is in CAT-5 cable kind of works, but is thin enough that it will often come out when you are just moving the board around.

#### androidfanboy

#7
##### Aug 22, 2017, 12:39 am
20-22 gauge is just about right and can handle any generic Arduino load that you put on it, as well as things like small DC motors, etc that draw < 1.5A.
"Genius: one percent inspiration and 99 percent perspiration." - Thomas Edison

#8

#### aarg

#9
##### Aug 22, 2017, 04:44 am
Oversized pins can damage the sockets by stretching the internal contacts and making them too loose.
... with a transistor and a large sum of money to spend ...
Please don't PM me with technical questions. Post them in the forum.

#### larryd

#10
##### Aug 22, 2017, 04:52 am
18 gauge wire is definitely too large.  I have a 500 ft roll of 18/2 though that I used for controlling the lawn sprinkler solenoid valves at my house and I still have a LOT of it left, so I try to use it whenever possible.  It *can* work in the Arduino headers, but you really need to swage it a bit and reshape it into a square.  Filing it down slightly also works.  The 24 gauge wire that is in CAT-5 cable kind of works, but is thin enough that it will often come out when you are just moving the board around.
Why resurrect a thread from 2012?

.
No technical PMs.
The last thing you did is where you should start looking.

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