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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1answer
29 views

How to wire a phocos any-grid inverter 220 v 60 HZ with two wires to a water pump 220 with 3 wires (split 220 v)

How to wire a phocos any-grid inverter 220 v 60 HZ with two wires (European style) with one hot wire 220 v and another ground, to a water pump 220 v with 3 wires (split 220 v, two 110 v hot wires and ...
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1answer
71 views

In an AC supply why does two single phase 110V wires connected to hot and neutral produces 220V

I have seen people connect 110V to the hot end and 110V to the neutral end of the socket to give a 220V to appliances like refrigerators. My understanding is that current flows, whenever there is a ...
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1answer
65 views

5 wire universal motor wiring for DC

I have a dual voltage 115/230v universal motor, which I need assistance connecting to DC power. The model is a Model D671B FASCO 1/15 hp 1550 RPM 115/208-230V with Industry number 1231.GE. The motor ...
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1answer
69 views

Vehicle wiring diagram - interpreting symbols compared to actual physical devices

I am going thru my bike's schematic/wiring diagram and going wire by wire I think I'm starting to understand how it works from turning the key onward. But some things are still confusing so perhaps ...
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0answers
37 views

Reverse polarity of 90 VDC motor with 2 foot switches

I am building a tool where I need to change the direction of the 90 VDC gear reduction motor with two foot switches. Power is coming from a motor controller with variable speed. Terminal 4 and 5 have ...
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2answers
105 views

Is there a formula to determine heat output of a wire with current applied?

I want to try and make a heating pad for starting seedling plants. I know you can buy those but I think it would be a fun learning experience to try and make one. What I don't know is how to determine ...
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3answers
552 views

How best to strain relieve cable entering aluminium enclosure

We are manufacturing electronic instrumentation which comes in a machined aluminium case. We have full flexibilty on design of the case. I need to design some form of strain relief for the single ...
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3answers
51 views

Do switches induce voltage spikes in the AC power grid?

I know that DC inductive loads create back EMF when turned off and that's why we use a freewheeling diode. Does this also true for AC inductive loads and AC loads in general? I know we can't use a ...
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2answers
81 views

Dupont wire connection sensitivity

I'm at my wit's end trying to figure out methods to separate Dupont wires. I ordered an 8 pin SOIC clip from eBay. Due to low funds I had to opt for the cheapest alternative. It arrived along with a ...
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1answer
80 views

Help understanding wiring of capacitor

I just wanted to double check my understanding of the diagram as in my mind the "visual clues" related to the way the cap is drawn seem to contradict the actual instructions of the diagram. ...
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1answer
22 views

Which UL standard(s) holds the specifications of all UL AWM styles of cabling?

Which UL standard documents the specifications of all UL AWM styles of cabling, detailing their construction, conductor sizes, insulation, etc. ? In my research, I was directed to UL Standard 758 ...
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1answer
91 views

Beginner problem: Debugging power supply

I am debugging my power supply using an oscilloscope. I have uploaded pictures of my setup, including oscilloscope reading, wiring (just power and ground with jumpers), and the power supply specs. The ...
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1answer
43 views

Help identifying 27" 2012 iMac internal plugs

I'm going to convert an old iMac into a 5k monitor, but I'd like to identify some plugs so I can have cables made rather than solder. I'm going to see if the cost (after prototype) is reasonable to ...
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1answer
106 views

Bad Residential Wiring - Dead circuits and circuits go on and off randomly [closed]

We moved into a home that is about 30 years old ten years ago. Our hallway lights are on a a circuit that is usually dead, but occasionally comes on for a few minutes or so, sometimes a few hours. ...
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1answer
88 views

Unknown symbol in motor diagram

What is this marked symbol, please?
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1answer
82 views

New motor only rotates clockwise

I stared out with the 28byj-48 motor and got it to rotate one direction with one button and the other direction with the other button using Arduino pins 2 and 4, respectfully. When the new motor, ...
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1answer
53 views

Connecting multiple loads to an extension cord

We have a garage at our house and whilst there is electricity going to it, it's basically just one outlet connected to our second fridge/freezer via a 15A extension cord. I was wondering if it would ...
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2answers
46 views

Understanding thermocouple transmitter wiring

I'm trying to use the RMTJ40BD thermocouple (page 12) and I'm having trouble understanding the wiring diagram for the output. The manual says that Vo and OPG are the outputs but what is OPG, what ...
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1answer
186 views

230V AC to 24V AC Transformer Wiring (Black, Red, Brown, Brown)

I'm setting an irrigation controller and I need a 24V AC source to switch the irrigation solenoids. Since I have 220V AC, I asked the electrical store for a 220VAC to 24VAC transformer and they gave ...
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0answers
69 views

CB Radio Effects Unit. Can anyone help with a wiring puzzle?

I’m working on a small CB radio project for a friend, but am having a hard time figuring out some technical details. If anyone has any ideas on how to solve this puzzle I’d be super grateful. The ...
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28 views

Does it Matter Where I Place Resistors on Circuit for Lightsaber RBG LED

I'm trying to figure out the circuit of a Lightsaber I wish to assemble myself using an RBG LED (Tri-Cree RGB EP-X2) and am unsure where I can put the required resistors and also how many I need. I ...
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1answer
38 views

Best way to switchover between 2 power supplies?

So I was trying to think of a way to make a circuit reversible across a DC-DC charger See diagram below, it will normally be on case 1, but in some circumstances, it will be need be on case 2 The ...
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1answer
35 views

Connecting CN3722 to Load AND Battery

Like the title says, can I do this? I got two schematics in mind about how to wire these up, which one is the correct one? This one is straightforward, but will it actually work if connected to load? ...
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1answer
120 views

Feed-through termination

I have a very basic question about rf-electronics: I tried to understand how feed-through terminators work, but I could not find a wiring diagram online. Intuitively it would make sense to me if such ...
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0answers
36 views

When connecting multiple differential pairs in a D38999 connector, is it common practice to have a ground pin for each differential pair?

I have a remote interface unit that has multiple differential pairs going to a from it. Some units that are connected have multiple pairs coming to and from. Should everyone one of the differential ...
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1answer
59 views

LED Spotlight array issues

I am making a "lightbar" for my vehicle which consists of 7x 6" diameter spot lights linked together. The specs for each of the individual lights are below: LEDs: 14x 3w OSRAM Max ...
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2answers
65 views

Newbie Assistance - Understanding Fairy Lights

I'm VERY new to EE and am learning the basics. My first goal is wiring up some small lights for my son's LEGO projects, and am trying to sort out the basics here. Right now, I'm attempting to piece ...
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58 views

How to wire MCU control signals with power and ground to control multiple external motors?

I'm working on a system based on a NodeMCU/ESP8266 WiFi controller, which controls two separate motor units, each consisting of a 12V motor and solenoid actuator. For practical reasons, I need to ...
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2answers
55 views

How many wiring combinations exist for an *n*-pin cable/connector?

This is more a pedantic question about the possible number of wiring permutations inherent to an n-pin connector and cable. Note combinations imply that elements may be used more than once (combined),...
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1answer
82 views

How can I solve these Verilog questions? [closed]

I am new to Verilog Language. I did answer the questions below but I am not sure if my answers are correct. I would appreciate verification to my answers and any feedback if I am wrong. Also, if 3rd ...
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1answer
74 views

Help interpreting car window wiring diagram

I would be grateful if anyone can help interpret the attached wiring diagram for my 2003 Toyota Camry power windows. The switch for my driver side window is busted so it is currently stuck at down. I ...
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1answer
181 views

SPI wiring SDIO pin with MISO and MOSI

I'm connecting the N76E003AT20 microcontroller to an RF module. The N76E003AT20 has 4 SPI pins: SPCLK, MISO, MOSI and SS. The module also has 4 SPI pins which are SCLK, SDIO, CSB and FCSB as shown in ...
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1answer
101 views

Where do I solder the shield wire on my USB C breakout?

First of all, I'm new to all this so I most probably won't understand complicated explanations. I'm planning to solder a USB-C breakout to my old keyboard's wires, but I'm not entirely sure where to ...
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1answer
69 views

Building a RS232 switch [closed]

I have an RS232 input and 2 audio lines that I want to switch to either computer A or computer B depending on the state of a physical toggle switch. Can anyone point me in the right direction of what ...
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1answer
72 views

How to use this latching relay to simulate button press?

I'm using a PIC on a 3v3 circuit to simulate a (normally-open) button press to turn on a machine. To do this, I have some Fujitsu AL3W-K relays. Mine appear to be the double-winding latching type. The ...
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3answers
124 views

Is there any alternative to the use of a ground wire? [closed]

Is there anything that can be used as an alternative to a traditional grounding pole that is buried in the ground? Is it possible to use a lightbulb, a series of lightbulbs, or maybe an inductor in ...
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3answers
69 views

Potentiometer heats up after changing wiring

I changed wiring on my LED array. I switched from a 24 AWG to 18 Gauge cable. I used the following potentiometers. However after changing wiring, all potentiometers (tried new ones and unused) started ...
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1answer
27 views

Is it possible to wire 2 short led strips with 6 pin (ON-OFF-ON) SPDT switch

Need help. Is it possible to wire 2 short led strips with 6 pin (ON-OFF-ON) SPDT switch in that way to have: A) One led strip - ON, second - OFF; B) Both strips - ON; Components: 6-PIN SPDT switch, 1 ...
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1answer
845 views

How to identify the positive and negative connectors on a PCB connector

It's possible this question has been addressed, but I don't understand the terminology to know if it has. I have taken apart several of my older BNC-style home security cameras. What I'd like to do ...
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1answer
53 views

What gauge size and fuse should I use?

I've purchased a Thlevel Car USB Charger Socket to install in my 12v system campervan and I'm confused regarding the fuse and wire I need to use to wire things together. By my calculations, given that ...
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0answers
34 views

Multi-Tee Cluster Lights

I have a set of Lumineo 1512 Multi-Colored Clustered lights. At any given point on the line there may be between 2 and 5 wires. My Goal I want a level of my tree ...
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3answers
103 views

Two way wiring with relay during power failure

I have below circuit employed at my home. Since I used 2 way wiring between relay and manual switch, during power failure, I face problem of Lamp turning On or Off depending on switch position. Out of ...
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0answers
43 views

Effects of bootlace ferrules to connect load-cell with amplifier

My colleague and I had an argument about whether or not to use bootlace ferrules for a load-cell (4 stranded wires + 1 shield | 100mg precision | OIML C3 | max. 3kg) going into an amplifier (spring-...
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3answers
296 views

Wiring a simple 24v DC light on an output terminal on a PLC

I am using a Micrologix 1100, part number 1763-L16BWA. I have been able to get the input side working, but can’t seem to figure out the wiring for the output side. I also have an 1762-IQ8OW6 extension....
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0answers
17 views

Help Wiring PSC Motor

I'm trying to wire a PSC motor for use outside of a washing machine. I need some help identifying the wiring and where the capacitor should go. The model is WH20X10063 and I attached the only ...
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2answers
83 views

What does “preserving the logic expression” mean?

I already asked a similar question here but didn't get an answer that explained the reasoning. Now the question is I'm asked to find which of the circuits below preserves the logic expression, but I ...
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2answers
123 views

I’m an electrical idiot - can you help me?

I have overhead doors at the back of my office building. I wanted to wire up a large red LED next to the light switch so that when employees leave, the light would be red indicating the doors are up. ...
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2answers
98 views

Debate on wiring risk of positive/negative wires along a path

I came across a design of a battery pack. As you see on the photo, the red wire is positive and black is negative. The red wire lays across the top of the battery pack and comes to the connector. One ...
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4answers
166 views

How do you wire something that opens

I am trying to create a box that has a UVC light in it. I am going to have the light on the top of the box, this part will open up. The issue is the batteries and parts are at the bottom of the box ...
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1answer
200 views

How to properly wire a five color RGB LED strip?

I've worked with common anode and common cathode RGB LEDs either 12 volt or 5 volt using PWM mostly to change color. Usually then these products that I work with have the typical four color wiring ...

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