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Hello everyone ?
It's totally confusing for me. It is my understanding that the neutral and the ground busbars should be connected at the main...
Hi,
I am trying to make a short pulse generator from any pulse input. By this I mean I want a final output with a fixed pulse width no matter...
Hi guys looking for some guidance ,i am assisting with the renovation of an old building that contains a commercial kitchen and restaurant the...
Hi, All
I have a megger LTW325 and fluke 1664FC to measure loop impedance by using high current mode. But both results are quite different...
Hi,
With regards to installation methods on Amtech, I have a question regarding cable ducts. I believe amtech assumes cable ducts buried in soil...
On a recent EICR i have measured 0.589 MegOhms (@250 volts) on the relatively old lighting circuit (red/black PVC wiring) , i have replaced both...
Dear Members, My name is Abdulhakim am from kenya, i work with an electrical company by name Link-up Power Engineers dealing with industrial...
I did a VLF and IR test on my 33kv cable and IR resulted between 80 to 100Mega Ohms on all the phases and VLF between 0.270 to 0.470mA is the cable ok
Hello, I was put on to this site by someone from reddit so sorry if i'm posting in the wrong place. Unfortunately I (24yo male in Norfolk, UK) was...
Hi,
Interested in the breaking capacity of this fuse... 4kA? Anyone know for sure?
Thanks
I have woken up after one of the RCDs tripped in my house. I have managed to figure out that it is a plug socket in my kitchen that is tripping...
Took a swa cable to an outside metal shed, earthed at house end but insulated at shed end. Installed earth rods and got reading of 58ohm . all...
Hello.
I have an exam coming up shortly.
Would anyone have a sample paper.
It's the electrical and electronic diploma, unit 308. It's a written...
I am using a 3 phase 4 wire surge suppressor on a single phase 240V mains. Is it still okay or will it have some back feed impact on the mains system?
The 232 protocol command of AMX's NP-Rel8 relay has to hit the enter key at the end, which command can I use instead of it. Now this central...
Hi I am reconfiguring a hot wash unit and need to use a flow switch as in attached files.
It controls a light powered relay and timer module I...
Was called to a lighting fault yesterday, the lounge light would sometimes switch off when another light was switched on, easy I thought a loose...
Bit of a random question but I’ve got a practice reason for asking. I know with a lot of control circuit timers and relays they state on them what...
I was asked to "just fit a bigger breaker" by a plumber who had installed an electric shower for a customer. Bit surprised he hadn't finished the...
Can someone explain to me please how a substation converts high voltage three wire to low voltage 4 wire?
Apologies from a newbie if this is in the wrong place.
A contractor is going to trace all underground utilities in an area, including electrical...
Not getting continuity on r1, rn and r2.
But the sockets are working fine,
Amy ideas what the issue could be, I'm checking behind each socket.
Hello,
I know that for 4-20ma transmitters twisted pair cable should be used with the screen grounded at one end only. However for digital signals...
We have a drawing that shows a solenoid valve panel( containing approx 40 valves) being powered from an adjacent control panel by a 24vDc PSU...
Hello,
I would like to convert the Furnas Drum Switch in my boathouse to wireless - The switch controls the winch in my boathouse and lets boat...
I have a four camera wired system.
I fancy adding a 5th camera.
I have an idea that someone may have invented a splitter box that could rotate...
So looking at a system that utilises a couple of sizable UPS unit to supply various equipment through a site. The UPS is static with 3 phase...
Hi,
I've just completed some fault finding on a ring final, as I couldn't get continuity on the CPC, and I found most of the metal back boxes and...
My dad is a fisherman and his boat has a 24v supply.
Was wondering if anyone could help me with this.
He has said that when he connects a 24v...
This coffee machine is three phase model number sm 105e
It’s three phase with 3 brown cables one neutral and earth
What is the cheapest way to...
Hi,
Does anyone provide backup power for when having to turn off power to an occupied house for long periods of time ?
I've got to turn off the...
Can someone please help me understand what these symbols mean in the attached picture
In a small restaurant theres a single phase supply just wondering what size converter i would need to convert 3 phase to single phase and what...
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I came up with an idea that could possibly produce more useful energy than is required to keep the system running & no it is not a perpetual...
I’m 29 studying electrical engineering level 6 in Scotland. And from what I’ve seen modern apprenticeships are only available to 18-24 year olds...
In my first job from school I was eventually worked out as computers took over.
Recent adverts (Google smart thermostats) had me wondering just...
Hello Ladies, Gentleman, Fellow Sparks,
I'm Rob Argent, New to the site, Former 15th edition electrician now last 18 years Integrated Security...
I have just disconnected a 3p compressor on a 16mm armoured but inside the isolator each phase was on connectors then dropped to 2.5mm flex
And...
Hi Everyone,
I am currently an Electrician and have been for 10 years now. Going to cut straight to the point...
I am wanting to look down the...
A Friend of mine has asked if I know anything about this Company Unicourse to do an online HNC Electrical engineering, it's not his first...
Anyone have any experience and/or software for directax 3 servo controller?
Need some help fault finding.
Thanks in advance.
I am needing to know if this wiring diagram is showing a few things:
1: Does this show a 3 phase to single phase conversion?
2: Does this show...
Hello i've recently just had a re wire done on a three bed semi house, Ive noticed a few things im not 100 percent on ive spoken to the firm that...
Im interested in doing the HNC building services engineering (electrical).........Is anyone taking this course by distance learning?
Any...
Advice please
Garage radial running from 32 Amp MCB with 4mm T/E supplying Multiple 13 amp sockets which are only used one at a time .
New...
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An electrician has stated that he will not sign off work done by someone else he stated "all or nothing".
Just want to check how many electricians...
This should have been a straight forward install, and maybe it should be and I'm just being an a***, so be interested to know what you would have...
Good Morning,
I am a licensed electrician, old school, and I am just now getting actively involved with batteries, inverters etc.
Would anyone...
In Short: I need help designing a circuit between a receiving induction coil and a battery load.
Longer Explanation:
I am entering a science fair...
Hi all
Been in electrical/electronics for many years and am now semi retired but keeping my hand in, but is it just me, my age or what but back...
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