All Questions
68
questions
0
votes
1
answer
41
views
EV charger individual cable insulation
Are the internal conductor strands inside the Level 1, level 2, level 3 EV chargers bare or do they have a coat of insulation? I know the conductor strands combined as a wire have a sheath of rubber ...
- 13
1
vote
2
answers
250
views
How to determine ground and power wires in USB 2.0 with not standard colors? [duplicate]
My USB 2.0 cable has 4 wires: blue, white, yellow and transparent. I want to connect it to a LED strip that has 2 wires: red (+5V) and white (GND). How can I find ground and power wires among those 4 ...
- 111
2
votes
1
answer
152
views
Looking for a cable/connector design with twisted pairs and power [closed]
I have project where I will be running multiple peripheral devices at different voltages, and having them all communicate through differential I2C. I'm looking to find a cable that has at least 2 ...
- 25
1
vote
2
answers
469
views
Can I safely use 22 AWG to run a 240 V relay at 30 meters?
I have three devices that I need connected. They are about 30 m away. Conduit space is limited so I want to try to get a single, multi core cable through for all of this.
What I need to run:
220 V ...
- 207
1
vote
1
answer
2k
views
What determines the voltage rating of a cable, and why do some cables have \$U_0 = U\$ while others have \$U_0 < U\$?
Just as an example, let's consider two cables, with voltage ratings being respectively 300/300 V and 300/500 V.
My understanding is that voltage rating is an indication of the quality of the ...
6
votes
0
answers
210
views
Identify kind of cable with markings such as "WE-B 2 PAIR" on the jacket
While cleaning out our back yard shed, I came across a coil of cable of a kind that I have never seen before (image below). It was left here by the previous home owner, who worked in some kind of ...
- 161
0
votes
3
answers
504
views
Why does Pomona banana jack cable have 18 AWG but can handle 15 amps?
This is one of those very common jumper cables with banana plugs. It says 18 AWG in the datasheet (link below), but it can handle up to 15 A? One of the labmates told me it could handle up to 20 A?! ...
- 749
2
votes
2
answers
214
views
AWG and metric markings on wire differ notably
I have been looking at "Tri-rated wire". This is wire that ostensibly meets the British BS6231 Type CK, US UL 758 Style 1015, and Canadian CSA 22.2.
I have noticed that the metric wire size (...
- 21
0
votes
0
answers
137
views
Wire size: is a 16 AWG wire the same 3x 23 AWG wires?
I'm building an LED installation and I was wondering if I could use the cat6 cables I already have. I've calculated the needed wire area to be 16 AWG (D 1.4mm, 1.65mm2) (for 5 meters).
Would this be ...
- 19
1
vote
1
answer
680
views
What type of wires are used inside a USB 3.0?
In a USB 3.0 cable, there are 9 different wires used. In the same, suppose we take the two differential pair wires (TX, RX) are used, which are in the range of 26-34 gauge. But I need to know what ...
- 19
2
votes
1
answer
341
views
CCTV cable power rating?
I want to know whether I can use this d-link 3+1 CCTV cable for powering an led strip which runs at 12 volts 1 amp. The led strip is approximately 12 meters away from the smps power adapter. I checked ...
- 690
0
votes
0
answers
426
views
Can 23/76 wire handle 12V 6A power? I have looked at several tables but cannot find answer
There is nowhere which concretely tells me if 23/76 is sufficient for 12 V 6 amps power. Is it okay to use 23/76 wire for 12 V 6 A?
0
votes
2
answers
174
views
Is there a design tool that tells you what gauge of wire to use? [closed]
Do any circuitry design tools (5spice, etc.) have a feature that tells you what currents you'll have in each wire/cable, and recommend therefore which gauge of wire or type of cable to use for each ...
- 165
0
votes
1
answer
145
views
Twisted triple wires when current is balanced
Twisted pair cables are supposed to be effective for differential signals since the current flow is equal and opposite. If I have three wires such that the total current is also zero (say, +5V, GND, -...
- 15
0
votes
1
answer
136
views
How can such an equation for the temperature of a *black body* be valid in this case?
I am currently studying The Art of Electronics, third edition, by Horowitz and Hill. Exercise 1.6 says the following:
C. Power in resistors
The power dissipated by a resistor (or any other device) is ...
- 1,281