Questions tagged [colour-coding]

Colour coding is about using choosing colours to indicate different things such as the function of wires in a cable or the the resistance value of a PTH resistor.

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57 views

Standards for colour of conductors of pre-assembled cables

We are designing a product for industrial energy storage systems. Multiple units are connected with pre-fabricated cable assemblies of 2-4 separate leads that are terminated in connectors unique to ...
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234 views

Phasing Order in IEC Color Codes

Currently, IEC 60445 international standard is used for conductor terminal color identifications. I've obtained different versions of the standard (2017 being the latest) and also IEC 60446, which was ...
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65 views

Is there a colour standard for mains 'signal' wiring?

Hello I am currently wiring a mains powered chassis. I have relays which use mains voltage levels for controlling other mains voltage relays. I would like to differentiate between the signals by using ...
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1answer
109 views

Is this a 4R9 resistor or somthing else?

After a power-peak due to a broken main electricity cable, me and my neigbours got some broken devices. At our house only my motor cycle trickle chargers were connected. And all 3 got broken :(. ...
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110 views

Resistor Value Help

I have two resistors that I'm trying to figure the values of. One is black blue silver gold black Second is black orange silver gold black Can anyone help with these values?
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2answers
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All electronic components have numeric values while resistors have colors: why is that? [closed]

I'm not an expert in this matter, so AFAIK the most part of electronic components have numeric values while resistors and few other components have colors: why is that? Why there is not a standard for ...
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3answers
175 views

Are there any traditional colours to use for the wiring in a 4 mA - 20 mA current loop?

I am designing a cable that carries a 4 - 20 mA current loop. Considerations: The positive lead is connected to VCC. The negative lead is connected to a 120 Ω resistor (other end of the resistor is ...
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1answer
187 views

What is the right-most component in this picture?

I'm reverse engineering an old RF transmitter circuit and I can't seem to figure out if the right-most component is a 3 band resistor (+/- 20%) or a capacitor (as the label on the board would indicate)...
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1answer
147 views

Value of 5-band resistor (current sense)

I have some blown current sense resistor and I don't know how to figure out the value of it. Resistor is blown so I cannot measure it. Well, I know about standard rules, unfortunately none I know ...
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81 views

Value of Green as Multiplier for an Inductor Color code

I was going through the Internet searching for the Color code table for an Inductor. The more or less same table which I got is : I have got an inductor : So I cannot find out the Value of this ...
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1answer
113 views

Is this a 0.25% “precision” bleeder resistor?

In the AC input section of a PCB, I found a resistor (in parallel with an X capacitor) with 5 color bands: BLACK - GOLD - YELLOW - GRAY - BLUE(LIGHT BLUE) ...
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1answer
1k views

Wire color code on usb to lightning data cable (duracell manufactured by esi)

Hi so i have two duracell chare cables. One is 6 feet the other 10, the 10 foot broke so I purchased a 6 foot and was going to lengthen it. Since they are both duracell I figured wires would match ...
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What is the color code for CAN Bus?

I would like to know if there is any color code specified for CAN Bus communication wiring, maybe in ISO-11898-1? (I have no free access to the file) I looked for any official documents without any ...
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1answer
569 views

Colors inside DIN 5 (MIDI) cable

Today about my first components in an electronic store. I'm currently making a MIDI IN circuit for my Raspberry PI. My local shop didn't have male to male DIN 5 pin cables, as they seem to be ...
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4answers
36k views

Australian 3-Phase Colour Code Standard

We're ordering some machinery from China and need it manufactured to Australian electrical standards including the wiring colour code. Unfortunately we don't have any electricians or engineers that ...
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3answers
265 views

SMD precision resistor color code (0805)?

We have specified some 0805 resistors to be 0.2ppm/C. On some boards/batches these are green. On others more "normal" looking. We specified Vishay. Is there some color code that indicates ultra-...
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4answers
43k views

Which color should be soldered to which connector for an earphone jack [closed]

I have an earphone plug having four colored wires (gold, red, green, blue) and a jack with four connectors: I need to know which colour should be soldered to which connector.
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How to test the voltage of a speed sensor and identify the +ve, ground and signal wires using a DMM?

I am a novice and would like to identify each of the wires going to a speed sensor. Below is a photo of the connector from the mainboard (left) to the sensor (right): Is it possible to identify ...
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3answers
157 views

What is the correct way to read color codes? [duplicate]

For example, The resistor above has four colors. Green, blue, red, gold. My calculation says its value is 562 ohms +-10%. But this page says its value is 5.6K-1/4W. What is my mistake?
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398 views

It is possible to exist more than 1 color code for same resistance. Can i use all of these color-codes?

It is possible to exist more than 1 color code for same resistance-value. I doubt, is there any convention about use only one of them (while manufacture) . Example : Say an 1 ohm resistor could be ...
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1answer
99 views

Is there a common wire color for PGD and PGC?

Is there a common color for micro controller programming data and clock wires?
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1answer
3k views

What is a good methodology to identify small SMD components?

Having been in the position of trying to identify a strip of mystery 0603 components I found on my floor, I thought a good general question to pose to this community might be what a recommended set of ...
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1answer
3k views

Likely RS-485 color coding of three wires?

We received a piece of equipment (actually from an Italian manufacturer, if that gives a hint) which uses RS-485. So, as well as a power connection the devices have THREE WIRES (bare wires) coming ...
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1answer
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IF transformer color codes

Is there any standard color code available for IF transformers? Generally in most of the Japanese radio receivers I see red color slug for MW oscillator, white and yellow slugs in AM IF stage, ...
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5k views

Is the white wire carrying any electrons

I don't understand why neutral in 110v , does it carry any current ,does the load like the light reduce the current
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1answer
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Red for +ve, black for 0v, …which colour for -ve rail?

I'm bodging together a bench PSU from an old server PSU, about to order a mixed bag of terminal posts for the front panel but then tripped over the problem that I'm not sure what's the correct or most ...
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550 views

Resistor values? [duplicate]

How can one see what value a resistor is given the colors? For example, what's the value of Red - Orange - Green - Gold?
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95k views

Just chopped a cable, is red power, black ground?

I've just chopped a usb to micro-b usb cable. There are 4 small wires inside Red Black White Green Isn't it universal that Red is power and black is ground?
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what is the color code of cables in earphones?

What I see after stripping the cable is this: copper-red and yellow on right channel green and stripped red-gren on left Whose are for ground and whose for signal ? (edit: I'm asking this for ep-...
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4answers
256k views

Headphone wire color coding

How do I tell which wire is which if I have a copper wire, red and green coded wire? Is the unshielded copper wire ground?
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5answers
26k views

How to find the resistor value using the color codes?

The title says it.
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3answers
12k views

What do the colors of resistor bodies mean?

I don't mean the colored bands, but the colors of the bodies themselves. They come in brown, blue, green, etc. Is there a standard? For instance, epanorama says: But there are two resistor body ...
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1answer
4k views

Thermistors' colour coding same as the resistors'?

WARNING: 30V was a mistake -- better to keep voltage down 12V as a beginner! I tested it over a very short time. Got the things hot over a long time with much less voltage -- apparently not enough ...
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13k views

Resistors with ends of the same colour

I know the values of resistors if they are gold-colored at the end. When both ends are the same, such as brown-o-p-brown and red-x-y-z-red, I am in problems. How to know which side has the last colour ...