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I appreciate that @mark641 asked how ferrite cores work here, answered by @Lucien Nunes , but TBH, it is at a deeper level than I need.
My...
A customer has an ACE 9000 Itron. If I remove the mains fuse, to replace CU, will the meter stop working and need to be reprogrammed by supplier...
Some months ago the transformer feeding my road had a HV phase loss with the result that my house was only getting about 85V. It was interesting...
I have some solar panels producing up to 10 KW and I wish to switch a 13 amp socket on when solar is being generated and off when solar stops and...
I've managed to mainly fix a Megger 1502 MFT that was so far out of calibration it got laughed out of a tester day.
I have high current loop. rcd...
- Question
I feel very very stupid but I started to hammer a small nail Into the wall and heard a clang when I hit with the hammer (not hard) I immediately...
Hi all, existing office building that is being refurbished. Existing DBs (single meter for small power & lighting) need to be replaced. Should...
Would a small UPS, running on batteries, be a suitably stable 230v 50hz supply while I do some tinkering with the loop calibration settings on an...
Hi, now everything is SPD's I've been told they need to be on their own MCB.
So incoming line goes through the main switch then busbar then MCB...
Firstly, I hope it is ok to discuss the wiring of speakers here. TBH my ignorance in all things electrical knows no bounds, and I am guessing it...
I have an original 250w glow plug in my 8yr old pellet boiler that's used to light the pellets during the start up phase on my boiler. The boiler...
I personally think the EV concept needs a new approach. Instead of spending hours recharging the EV the user just swaps the discharged battery...
Im making a led array out of 8 100 watt led's and I want to put something in between my battery pack and the array that can adjust the voltage...
Hello all and thank you for your help in advance.
I have been charged with finding the following information out for work and as I'm sure you...
An apprentice ran my cabling and fitted socket covers works signed off by a third party certification - any issues with this?
With fossil fuel energy on its way out, I have been trying to come up with a way to save the energy we now use. Here is what I came up with.
May...
- Question
hobbyist question: If I'm running a pelton wheel generating x watts, is it enough power to pump out the same amount of water used to create current?
Please be as honest as you can all, I'm looking for real honest views before I waste thousands of pounds and my few remaining years of working...
if a 420 watt 12 vdc led light draws roughly 35 amps, what would the draw be on a generator putting out 120vac with a 120vac to12vdc converter
Afternoon, is there any requirement for electrical cabinets to be all metal? Or is any flame retardant ok?
It’s for a basic PLC cabinet with...
Hi,
I have taken over a design engineering job for industry.
The design is using a 400V/110V transformer. Usually, the 110V is single phase...
Hi,
I am a design engineer (2 years out of apprenticeship).
I am in the process of amending some designs that are not quite to our company...
- Locked
So, a flat 6 floors and above needs an AFDD on each socket circuit. At up to £150 each it is going to be an expensive undertaking if there are...
- Question
Hi senior members of the forum,
I need advice on couple of questions about Rio and BHP specs for electrical installation purposes.
What is the...
- Question
What would be my gain margin if my phase angle doesn't cross -180? Thanks in advance
- Question
Just an idle thought - has anyone any experience of using the DC output of solar panels to directly feed an immersion heater, to avoid the expense...
Few days ago, I bought a solar panel. It's rating was 6v and 450 mA. But when I measured with my multimeter, It shows around 5.25v to 5.85v and...
Hi hs anyone done distance learning on this course if so could you tell me how it was deliverd i mean was it video where they explain or was it...
What is the difference from a simple lghtning rod vs the modern ones they sell for 1,000pounds ? Do these really work so much better ?
Hello,
I have a question about diversity and load utilisation factor with Trimble software.
Say we have a 3ph 150kW load with 0.8 pf which gives...
Hi Guys
I recently started the HNC in electrical and electronic engineering in online learning through teeside university. Im hoping someone on...
Hi all,
Hoping for a little advice. I work in the Asbestos industry and we manufacture mobile decontamination units we follow the HSE 247 that...
Hi All
I hope this topic makes sense for this forum and somebody can help me to understand.
This is what I understand (please allow numerical...
- Question
Hi, morning EF.
I was looking at a single phase motor yesterday attached to hydraulic pump for cardboard bailing machine that seems to be...
Hello. I know its probably a long shot but i have this part [from a roberts radio] and the middle component got burned. anyone knows if said board...
What happens if we switch only certain vectors of Space Vector PWM(SVPWM). For e.g. V1, V3 and V5?
- Question
Has anyone in here done HNC Engineering design module?
- Question
I'm trying to find a simple way to answer some stress related questions in regards to MV termination to apprentices not engineers...this is what I...
Hello guys,
I have 10W solar panel, a 7000 mah battery and 10A charge controller.
there is 7 hours of light a day
i have 3W little camera which...
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2x4.8kw hot water with 1x4.8kw sourceI have a 4.8kw solar diverter with 2 x 4.8kw hot water systems. Is there a switch that will only heat one hot water system at a time and switch...
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Torque TalkLong time no see and I hope you're all doing well. I see that torque screwdrivers have become the height of fashion in the UK over the last...
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I.R. testing existing circuitsThe accepted method of I.R. testing existing circuits has been to join L and N together and test to E, to protect against damaging any electronics...
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