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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Can I replace two run capacitors with a dual run capacitor?

In this unit https://ameristarhvac.com/wp-content/uploads/pdf/M4AC3-Air-Conditioner-Installation-Manual.pdf Can I replace the 35 uF capacitor and the 6 uF capacitor with a 35/5 uF dual capacitor? If ...
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12/24 volt system. With diagram

Please review diagram. A simple basic system to provide 12 or 24 volts. SPDT switch will activate either the 12 or 24 V system. The solenoid is used in the 24 V system because of the high current load ...
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Which connector is this three connections inline XS 20 marking

I can't find the connector type of this part found on alibaba for which I need its mate. I have it in front to me. body is 300mil width and about 200mil thick. Pin spacing 2.5mm (NOT 100mil!!!!) There ...
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What is the PE in 4P+PE connector mean?

I'm wiring a valve actuator to a connector for quick-disconnect purposes. The actuator has five wires so I thought of getting a connector that says 4p+PE, however I was told that 5p was needed. I'm ...
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What gauge wire is acceptable from 15 amp power supply with low current demands? [duplicate]

I am looking to directly power a Raspberry Pi for my 3D printer from its existing power supply. The terminals on the power supply appear to be ~15 amps max output at 24V. I already have a buck ...
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1 answer
64 views

Heater from France with blue, black, brown wires [closed]

I have just bought an oil heater from Screwfix. It is a French appliance supplied without a plug. I've just realised the wires are blue, brown and black. Would anyone know how I go about connecting ...
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Wiring power to many LED Strands

I have read as many threads on this site and others related to this, but haven't found any that specifically answers my questions. I have about 20 WS2811 LED Strands. They are 12V and each LED uses ...
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1 answer
52 views

Wiring of laptop 3-prong power supply (US vs UK)

I have a laptop power supply that comes with a US 3-prong plug, connected to the PS through a 3 circle female connector. I want to change its plug from US 3-prong to UK 3-prong. But, if I am not ...
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Disconnected wire still lit Tester turns on

I have multiple wires going through an electrical PVC conduit. Two phase wire carrying 220v AC of 1.5mm gauge. Two neutral wire carrying of 1.5 mm gauge. One wire for earthing (grounding) of 1 mm ...
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2 votes
2 answers
364 views

How to use panel-mount connectors where the nut goes on the inside of the panel

Some panel-mount controls have the nut on the outside of the panel, like this: Other panel-mount controls have the nut on the inside of the panel, like this: With the nut on the outside, I first ...
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7 answers
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How to convert European 230V circuit to US standard 120V circuit?

Suppose I have a house in Europe. The house is of course wired with 230V, which means it won't work directly with US plugs. If I acquired US outlets, how would I convert a single European 230V circuit ...
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3 answers
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Servo motor long connection wire

I'm working on a mechanical device that uses three DSM44 servos, two FEETECH Mini Servo FT1117M, one JX PDI-6208MG Metal Gear Digital Servo, and one DS04-NFC 360 Degree Continuous Rotation Micro ...
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wire rotary switch with leds that turn one at a time

I have a 9V battery, a rotary switch (one pole, 5 positions), and yellow LEDs (2V drop). How can I wire it so that as I rotate the switch the LEDs turn and stay on until I reach the end of the switch? ...
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2 votes
3 answers
152 views

Mystery small, electric motor: shaft held stationary while motor spins around it

I want to wire this motor to a 3-pin plug. The colors are not standard. Which of these wires is neutral, active and earth. It would be of interest to know what this kind of motor is called? I was ...
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173 views

Wire Size for 400AH (2 @ 200ah) battery bank with 4000w inverter?

I have 2 12v 200AH Renogy batteries I’d like to create a 12v 400ah battery bank from. I am trying to figure out what gauge of wire to use for connecting these batteries together in parallel. My ...
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How can i reverse the direction of this dc motor easily?

How can I easily reverse the spinning direction of the left motor? Thanks
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1 answer
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How do I wire a seven segment LED display to display binary input from two buttons?

I've been tasked with implementing a circuit involving a seven segment LED display and two switches/buttons. One will inject '1' and the other injects '0' into the circuit, and every four inputs a ...
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USB 1 to 2 switch wiring

I have 1 USB hub with mouse and keyboard connected and I'd like to build a switch to be able to switch this hub between 2 PCs. I have a 3-position toggle switch with only 2 contact pairs, so I can ...
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What's wrong with my wire connections? (LED strips only getting ~1 V)

I'm trying to make an LED strip work, with these parts: A WS2812B LED strip (60 LEDs/m), 5V An Alitov 5V 15A power supply An Arduino Nano My issue is that the strip isn't getting the 5v it requires. ...
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2 answers
70 views

Help me to understand the outputs of this generator

This is taken from a Denyo TLW-300SSk generator. It is outputting U V W to 0 a 115V. Is this capable of outputting 220V as well? If so, do I have to couple two phases?
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UL wires for low voltage signals and mains power

I am currently working on my pet project - home appliance device that is powered with mains (120VAC/230VAC) and also have low voltage (<24VDC) part. In the process I also want to fill some gaps in ...
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3 answers
330 views

What would this be called and where can I learn more?

So I have a fair amount of experience programming and was thinking hey why not try and write a new controller for my motorcycle (I know, a bold idea) and if not that, at least redo the old wiring. The ...
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2 answers
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220 volt, three phase issue

My company had a machine moved from one facility to another. The machine was fully operational when it was disconnected. It operates on 220V three phase power. When powered up at the new facility the ...
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1 vote
3 answers
92 views

Multiplex grid of LEDs with microcontroller

I'm trying to multiplex a grid of LEDs directly from a microcontroller but all the schematics I'm seeing online show how to multiplex to some kind of IC chip or board that isn't the main processor. I ...
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-1 votes
1 answer
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How To Connect Electrodes to Transimpedance Amplifier? [duplicate]

I wrote a post earlier last week asking the same question, but I have better information now. I have a microfluidic cell with silver electrodes with 1mm diameter and about an inch long. I need to ...
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1 vote
1 answer
96 views

Wiring an EE42-1200w transformer [closed]

I have a ferrite core transformer with 6 pins on on side and 4 on the other. How do I wire it for 110-240 VAC in to 12-24 V out? The transformer is called EE42-1200w there is a picture on this page: ...
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2 answers
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Is it important to which GND I connect my relay (OR gate on signals from two different controllers with separate VINs)

I have a power supply (let's say 5V battery) and a NodeMCU (micro-controller) attached to it. I want to turn on the power supply for this NodeMCU #1 by signal from another micro-controller (from ...
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1 answer
83 views

using USB-C for connecting pins on esp32 to buttons and analog joystick

I'm trying to connect buttons and a Joystick that are on one board with an ESP32 on another board. I'm trying to keep it as simple as possible and just connect a pin to ground to tell me when a button ...
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1 answer
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How To Connect Silver Wire Electrodes to Transimpendance Amplifier

As the title suggests, I need to connect silver electrode wires that are about 1 inch long and 1mm diameter (sticking rigidly out of a microfluidic cell) to a transimpedance amplifier. The problem is ...
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2 answers
68 views

Can I set a pin high when it is connected to the SDA line?

I have an STM32 development board. I want use DCMI (camera interface) with this board. Unfortunately there is an AT24C02 E2PROM mounted on board with its SDA pin connected to the same pin used in the ...
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3 answers
523 views

How do I wire these LEDs in parallel?

So I got these COB LEDs, and I want to wire them in parallel. On one side, they have contacts labeled +/- and on the other there are two contacts labeled +/-B How do I wire these? I am not quite ...
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2 votes
4 answers
820 views

Trying to understand this electrical diagram schematic on an AC motor that I have, particularly symbol between yellow and black wires

I'm new to electrical wiring and I'm trying to learn a bit and came across this AC motor which I have that isn't hooked up. I have attached the motor wiring diagram: This is also the wiring ...
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2 answers
58 views

Hardwiring USB - Switch data lines?

I am trying to hard wire a USB host to a slave, but i don't know if there is maybe a data line switch that would be there if I used a USB cable. I thought I might have to because I looked at some USB ...
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2 answers
60 views

PT100 wiring: use different wires joined together and cable length considerations

I am trying to convert a fridge into an incubator for turtle eggs. I would like to make as little modifications to the fridge as possible (i.e: avoid drilling holes through the styrofoam) so that is ...
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2 votes
1 answer
98 views

Connecting two different devices to multiple sensors without influencing the values

I'm currently working on a project to build a TFT dashboard for my motorcycle (based on an ESP32 as the main IC). I want to keep the original LCD dash and all its wires connected and just "split&...
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1 vote
4 answers
171 views

Help needed reading an audio transformer wiring schematic & impedance table

I am trying to link a transformer's schematic to its impedance table. I have trouble linking the values to the indivual pins. For now I would like to use it exactly like in the picture. My ...
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1 vote
1 answer
65 views

USB pinout on OMRON thermal printer

I'm trying to figure out how an OMRON Printer HEM PRT 1-Z operates (see related question on the Raspberry Pi StackExchange & IC identification question) in order to wire it to a Raspberry Pi Pico. ...
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1 vote
1 answer
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IC identification on OMRON thermal printer

I'm trying to figure out how an OMRON Printer HEM PRT 1-Z operates (see related question on the Raspberry Pi StackExchange) in order to wire it to a Raspberry Pi Pico. Since I couldn't find any "...
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1 answer
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Why does a car body ECU module need to share the ground with the circuit it monitors

I am finding difficulty reading a basic wiring diagram from Bentley for my 1996 E36 BMW. I do not understand why the ECU needs to be connected to the ground. I understand that the trunk lights receive ...
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91 views

Getting the same value from a pH Probe

I am totally new and looking for some advice, please. I am trying to connect a pH Probe (PH-4502C) to a Wemos D1. I believe to have wired this up all correctly, I have wired the PO pin to the A0 pin, ...
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1 vote
1 answer
77 views

Using a selector switch to change between a 12 V and 20 V battery

I am working on taking a 12 V system and introducing an alternate battery source that is a 20 V battery that is stepped down to 12 V with a RioRand 7-70 V PWM DC Motor Speed Controller Switch. If I ...
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Any idea if a 2/0 3C teck cable will have fitment issues through a 1-1/2" Metal LB?

I need to feed a 45 kVA transformer and I need to use an LB to pull the conductors through. Will I have issues with the bend radius of the 2/0 conductors? It's a 3C cable. the conduit is 1-1/2" ...
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2 answers
56 views

Any kind of connectors for these switches?

I've got these toggle switches - each of the legs are around 1.2mm wide. Are there any connectors for these legs - e.g. spade...but haven't seen anything 1.2mm wide. I'd prefer not to solder it. ebay ...
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Wiring my homemade LED matrix [duplicate]

I have recently had the idea for what's essentially a LED matrix that will span my entire ceiling, which will allow me to do tons of cool lighting effects, etc etc. This idea didn't come out of ...
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58 views

How did I measure AC voltage without a complete circuit?

I have a mystery I'm trying to figure out. (This is going to sound like a DIY home improvement topic, but bear with me, it's electrical.) I recently installed a new smart thermostat. It requires an ...
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-1 votes
2 answers
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Wiring to connect three USB 3A receptacles (to connect my laptop to an active usb hub from one of two locations)

I'm a total noob in electronics ) I am trying to solder three USB 3A receptacles in a way that would allow me to connect my laptop to my active USB hub from either of two locations (there will be only ...
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1 vote
1 answer
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How to integrate a conductive adhesive sensor

I am working on my final project for uni, in which I am building an electrical circuit using a force sensor that has conductive adhesive. I am unsure how to integrate this sensor into my circuit, ...
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5 answers
154 views

How to safely *temporarily* wire 120v?

I am wondering if there is any device to safely create a wire connection? More specifically, here is my most recent situation: troubleshooting a noisy 120V electric motor (fireplace blower). The motor ...
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1 vote
1 answer
135 views

Why is my plug socket CRACKLING?

I have one socket at my resident where I plug my laptop charger. It started crackling a few days ago and it continued every day since. Today I opened the socket and replaced it with a new one. It ...
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2 answers
75 views

Ethernet RJ45 M-F cable (socket <-> plug)

During renovation I've asked the electrician to use two long patch cables originally running from my router to create RJ45 sockets with the intent to later connect the router to the socket using a ...
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