Questions tagged [wiring]

How wires connect to terminals and to each other; coloring and organization schemes; appropriate wire selection and installation techniques

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2answers
76 views

Ethernet over individual wires

I am doing the integration of an aircraft device that uses Ethernet 100BASE-T as its main communication line. The manual says the device comes with its own testing cable which is approximately 2 feet ...
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2answers
335 views

Wiring an RGB led light array

I'm building a grow light using 100 rgb leds. I know that I need resistors but I don't know how to calculate which ones to buy. Also before I buy the leds I have the choice between common cathode ...
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2answers
105 views

Before build: Will this circuit work, or have I overlooked something?

Some friends and I have given ourselves the goal of building a unidirectional speaker. We bought the necessary components and electronic parts. Before starting to connect everything we wanted an ...
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1answer
248 views

Confusion with NPN input wiring to a converter

I have this frequency to analogue signal converter and I'm very confused about using it with NPN inputs. Here is the only block diagram they provide in their manual: When I power this converter ...
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0answers
48 views

Female wires to connect 12V ECU to power supply?

I have extracted the ECU (engine control module) from car, however, this module has 3 pins that needs power input of 12V. Arduino jumper wires will not work as they won't withstand the current I need ...
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0answers
60 views

Continuity test isn't working on a ribbon wiring harness

I have extracted this wiring harness from the valve body of the transmission. But when I did a continuity test with a multimeter to diagnose if there was any problem with the wires, there was no ...
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2answers
68 views

Wiring button cell without soldering using household material?

I bought some hearing aid button cells for pennies. I want to use them in a toy project that connects a push button switch and an LED. I hook up the LED and switch using alligator clips without ...
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1answer
404 views

Battery Pack Design: Charging Parallel 18650s Through a Step Up Converter and BMS

I taken the necessary precautions in creating my own custom battery pack: I bought two 18650s from the same shipment and will attach a diode from each positive end of the 18650s before attaching the ...
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0answers
38 views

what gauge wire for long distance [migrated]

I am trying to wire an outbuilding with the equivalent of a 15-amp circuit from 300-400 ft away. What gauge wire do I need? Also, does the full length need to be a constant gauge or can the thickness ...
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0answers
41 views

What does the dashed box mean on this wiring diagram? [migrated]

I couldn't find an automotive mechanical stack exchange, so hope this is ok here. This is a partial wiring diagram of the PCM on my truck (2011 Dodge Ram). I am trying to find the Driver Unlock Relay ...
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1answer
5k views

Wiring DIN connector with 3 wire DC solenoid valve

im buying [smc VQZ 212 5YZ1 C6] 3 port solenoid valve with 2 possible position(let say A and B). This solenoid work with 24VDC and have 3 pin/ wire. There is No 1, No 2 and GND pin. I will never ...
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1answer
41 views

What type of wire would be “best practice” for extending stepper motor leads?

I've been using unshielded "communication and security system cable" (https://www.mcmaster.com/8280T32-8280T321/) for running cable to connect stepper motors to motor controllers. I haven't ...
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1answer
190 views

Why would a wireless smart card antenna have one larger loop and three smaller loops instead of four similar size loops?

This image is originally from here. I added some annotations. The picture shows an x-ray shot of a smart card with wireless capability (and also a contact pad for direct connection to a terminal). ...
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2answers
73 views

What wire should I use to carry 12 V, 2 A power?

I am working on wiring a 12 V, 2 A power supply to a DC linear actuator (both linked below), but I do not know what wire to use. Will 22 gauge wire work, or is there a different gauge or type to fit ...
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0answers
9 views

Light fixture with two pairs of wires does not react to the switch. One pair is always on, another always off [migrated]

I'm replacing an old fixture into a new light fixture and ran into an issue where it does not respond to position of the wall switch. There are two pairs of wires coming from the wall into the socket. ...
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3answers
80 views

Extra pin for shielding with CAN bus connector

I am presently using a 4 wire bus for CAN (CANH,CANL,PWR,GND). This is used all across the design for various boards. Now the cable needs to be shielded. Would this imply using 5 pin connectors and ...
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3answers
65 views

M8 connectors and their coding

A quick read on the internet shows that M8 connectors are coded. The little info online I can find says A-coded is the most common style, typically used for sensors and actuators. B-coded is is mostly ...
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1answer
242 views

USB-C Connector wiring 3 wires

Hello, I am looking for a usb c connector suited for three wires. I can’t find them anywhere. The picture shows the broken connector from a 65w usb c charger. Can anyone tell me where I can get a ...
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1answer
443 views

Transformer mains identification

A friend gave me a transformer from an APC UPS that supposedly was capable of \$1300 VA\$ (I have my doubts, but it is very large and I am not going to be using nearly so much power, so OK). He doesn'...
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6answers
10k views

Why is it not advisable to fuse the neutral

I have been doing some research on this question. The answer I get most of the time is that this is for safety reasons. That there can be no current in the neutral that didn't come from the live. If ...
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1answer
74 views

A/C voltage in the air? [closed]

I've been building a counter top dishwasher and just noticed that my sink is kind of grounded, around 30Megaohms resistance but 120V. While checking that I also noticed the air near metal in my ...
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1answer
106 views

How hot does an electrical house wire normally get?

From a theoretical point of view, how hot does an electrical wire in a house get in normal use? To be more specific, in the United States, there are two usual residential circuits, 20 amp circuits ...
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3answers
2k views

Why is this 3-way speaker wired this way?

I found a service manual of a pair of 3-way speakers that were part of a mini integrated stereo system. These are Sony SS-H77 speakers, which have served me very well back in the day. Looking at the ...
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2answers
84 views

Automotive Relay

In this diagram it shows the power going to a relay (229) I was wondering if anyone could explain to me in simple English (I don't know much about electrics) what the symbols mean to left of J314 ...
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2answers
84 views

Combining two speaker channels (left + and -, right + and -) into a TRS style cable (left, right, common/ground)

I'm currently building a portable stereo speaker and have run into some issues. The speaker is based on a set of broken Jabra Move headphones (used as bluetooth receiver) and a XH-A232 amplifier board....
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1answer
171 views

Shield wire in Micro USB extension lead appears to be ground

I am currently working on a Bluetooth project which needs micro USB for charging a battery. My original plan was to use a female surface-mount micro USB socket and connect its +5v and ground pins to ...
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1answer
48 views

Wires on an AC variable frequency motor

I have sourced an AC variable frequency motor, it came from some sort of excercise equipment. I would like to find out if it runs, but the wires puzzle me. The wires are: Black Red Yellow Yellow/...
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4answers
7k views

Can I wire a dimmer switch into a soldering iron?

So I have a really cheap soldering iron and a dimmer switch meant to be wall-mounted. The soldering iron has a standard, ungrounded cord. The dimmer switch has four wires: a green (for ground), a ...
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1answer
70 views

I Need Help Making a Weird Custom Flashlight

As said in the title, I am trying to make a homemade flashlight. I have no experience when it comes to electrical engineering and I have a very basic understanding of this stuff. What I am trying to ...
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1answer
46 views

What are the effects of small spark gaps on connectors?

I was reading about the '4th Pin' problem that effects almost all modern iPhone users. It is where the 4th pin on the lightning connector turn black and eventually will not work until it is scraped or ...
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1answer
59 views

How do I wire a single phase 220v motor with a start capacitor AND a run capacitor, in ADDITION to start windings AND run windings?

I speak your language, as I am a 12 year veteran control tech for a boiler company. I'm doing a favor for a friend and ran into this issue. Ive wired plenty of single phase motors with start and run ...
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1answer
40 views

I'm going to wire 2 batteries together into a circuit but one has 3 wires and the other has 2 wires how can I make this work?

I have a battery in a circuit I want to add another battery which is the same voltage and amps but 2 wires can I just connect the positives and negatives and leave the white in the circuit?
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1answer
61 views

Removing wires / connectors on dishwasher circuit board

I need to remove a circuit board to send for repair, but I’m not sure how to remove these wires? I notice there’s two silver objects in two of the holes, not sure if they’re clamps or fasteners. I’ll ...
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0answers
23 views

TRRS 3.5mm audio jack wiring to sim868

I want to connect a 3.5mm trrs audio connector to sim868. The image above is my connector. But sim868 has four pins as: 1- MIC + 2- MIC - 3- SPK-N 4- SPK-P As shown in the picture above, the pins of ...
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1answer
47 views

How to wire a single input for two separate chargers e-bike

I'm currently designing my own e-moped for university (named ‘enduro 器’); I am currently going through the wiring and I am in need of some assistance. (refer to the image above) I want to be able to ...
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0answers
34 views

Quick Disconnects / Connectors for 24VAC Power - Project Box

I have a small project in which I will be using 24VAC power that runs through float switches to operate relays (listed below). The 24VAC will also be used to control a small motorized ball valve (...
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2answers
456 views

Wiring in Thermostat (Rittal 31100) as a 24V Temperature Switch

I want to wire in the following thermostat. https://proax.ca/en/product/205417/RIT3110000 And am having a hard time understanding the wiring diagram I think I get that 5 is L and can be connected to ...
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2answers
47 views

Wiring a 4 pins slide switch

I want to know how can i wire this toggle switch to obtain 3 positions : Position 1 : Turn Off System Position 2 : Turn On System Position 3 : Write "High" On a microcontroller (ATtiny84) ...
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2answers
1k views

Are induction stoves considered inductive loads?

I know a washing machine and a coffee grinder are considered inductive loads so when doing math for wiring you would multiply wattage by 2x to be on the safe side. Just one plate of my inductive stove,...
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1answer
149 views

Stepper motor wiring

I have what it looks to me as a stepped motor, power at 24DC, but it has no name or mark, and i can't find any documentation about the wiring, here are some pictures of the plug and the motor, I'll be ...
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2answers
2k views

Definition of Field Wiring Terminals as in UL 499

I'm wondering if anyone can tell me where I can find the definition for "field wiring terminals" as referenced in UL 499 "Standard for Safety Electric Heating Appliances" table 27.1 "Minimum ...
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3answers
95 views

Cable selection and wiring for RS485 communication

I'm designing a sensor system where each sensor communicates via RS485 MODBUS in a high-density environment. Each line consists of 18 sensors which then goes to a gateway (Elfin EE11) that converts ...
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2answers
43 views

Splitting humbucking pickup coils with a balance pot?

Is it possible to use a balance potentiometer to blend/split the coils of a humbucking pickup on an electric guitar? A humbucking pickup is (basically) just two single-coil pickups placed close ...
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1answer
66 views

How to use a transistor to externally trigger a Canon EOS camera?

I need to trigger a Cannon EOS 650D camera externally, this is done by shorting 2 wires, leading out from a standard 2.5mm jack: The camera provides 3.3V. I want to complete the circuit and ...
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0answers
39 views

12 load sensor digital scale?

I have a unique need for a custom, foldable scale and I'm having a tough time narrowing down the components needed. My search on how to get this done has brought me here to this community. Essentially ...
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1answer
274 views

Can I simply add a 240V Neutral to SONOFF TH10 when replacing wall thermostat

So, I have purchased a SONOFF TH10 wanting to use it to replace my wall mounted thermostat. The thermostat has 2 connections: Always-Live and Switched-Live (which is activated of course by the ...
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1answer
84 views

Wiring a transformer's coils together?

just a couple quick questions. My goal is to make a powerful inductor and I was wondering if it is possible to this by connecting the primary and secondary windings of a microwave transformer in ...
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5answers
16k views

Wiring multiple peltier units

First of all this question relates to powering Peltier units and not the physical relationship. I have two Peltier units and a 320w 12v supply similar to this the units are TEC12715. They are ...
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1answer
70 views

Wiring a USB 2.0 Type-C receptacle so that both orientations work

I'm trying to wire a USB Type C receptacle just for USB 2.0. If I wire A1(GND), A6(D+), A7(D-) and A9(VCC), this works, but only for one orientation (as expected). If I use the B-side data pins, that ...
3
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3answers
46 views

Induction Motor Wire Size

Capacitor Run Single Phase Induction Motor have very high starting currents, possibly in the order of 35-40 Amps upon startup for a 1 hp device, whereas the nominal current usually lies in the order ...

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