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  1. C

    20kVA single phase generator grounding question

    How should grounding be made to a 20kVA single phase generator set feeding a domestic property via a manual change over switch? At the generator's alternator neutral is bonded to earth. The generator will be some sixty feet from the mains input box of the property fed by SWA cable. The...
  2. B

    Hello from Chicago - question about 400amp service being run over 600'

    Hi Everyone, just saying hi as I already posted my question in the Electrical Advice section. Appreciate any info from someone with experience running 400amp residential service to a house a good distance from the main utility supply line. Thanks! Mike
  3. fanito

    Simple question about converting 240v to 120v

    Hey guys, need some advice, please... this is probably a dumb question but hey, want to make sure.... I am going to replace an electric cooktop that is 240v to a gas cooktop that runs in 120v for the "minor" things. Anyway, since I don't need the 240 jbox (no proper outlet but it is under the...
  4. Sara Davies

    Question for a new product: uni student. What jobs are done on the floor / kneeling most?

    Good day I'm a university student on a product design course. To create a product around electricians day to day work making your lives easier. My main question is what work do you conduct most on or near the floor? What tools are used in those jobs? lastly what are your issues an...
  5. B

    Can I get help with the question

    Hey so I need help understanding this question and understanding it in the NEC.The service to a multistory building is 277/480-volt, 3-phase, 4-wire. There are 125 120-volt, duplex, general-purpose receptacles to be installed on each floor. A 3-phase, 480-volt primary, 120/208-volt secondary...
  6. M

    Tricky Starter Circuit Question - 2001 Toyota Celica...

    I have an interesting starter circuit issue on a 2001 Toyota Celica (that won't start). If I have the starter out and have the main positive wire connected, then, run a jumper wire to the solenoid directly, if the starter is grounded to the engine, vehicle fans come on etc. when I set the...
  7. mikeysmith

    Garage buildout Question

    Hey all, I bought a big garage that I’m going to subdivide and rent out. I am going to hire an electrician to do all work. This is not a DIY question. I just wanted to ask for advice here before hiring an electrician, so I know what I’m getting into. Thanks in advance. The space is 2500 sqft...
  8. GTR450

    Question about discharging nimh cells in parallel

    Hi, I have question about paralallel discharging NiMH modules. I have 40 modules and one modul consist of 6 x 1.2V cell = So nominal capacity is 7.2V. These modules are in car connected in series. But I replaced 15 bad cells and now I need balance them. In one thread I have got good advices but...
  9. N

    Wiring Question Chandelier

    I have a new 15 arm chandelier, each arm has 2 lights which use G9 LED bulbs (3W equivalent). Each arm also has four wires coming into the base of the chandelier. My question is what is the best way to wire/bundle all 60 wires so they hook up to the hot and neutral safely. There are 30 wires...
  10. A

    Light switch question.

    Hi There, not certain if I'm in the right place but here I go ! I have 4 LED ceiling (4 X 9 watts, 110 V AC) lights that are currently working on a 3 way regular 3 pole switche configuration. I want to make a change by installing push button switches on a plaque that will be installed on the...
  11. M

    Maximum permitted Zs question

    I am a lecturer teaching electrical installations and in reading through the on-site guide to prepare a lesson I have come across a section I have not seen before. On page 146 near the bottom, the OSG talks about applying an ambient temperature correction factor to the maximum Zs values given in...
  12. A

    Newbie question 240v

    I have a welder that takes 240v. I just wanted to know an appropriate wire size I should use and breaker size. I had been recommended 10-4gauge with a 30 amp breaker but am pretty sure that’s not enough power I’m using an Eastwood mp250i I know I’m not an a electrician
  13. Shaun H

    Came across this, classic example of question no fused neutral

  14. S

    Question re 3rd party certification

    An apprentice ran my cabling and fitted socket covers works signed off by a third party certification - any issues with this?
  15. D

    Light Switch question

    Hi All Struggling to install a bog standard light switch due to getting confused by different coloured cables. I'm an avid DIY but never had this issue before. So in a house where they put a dimmer switch in but it was flickering and light switch was making a weird noise. I hate dimmers so...
  16. C

    UK 50 Amp RCBO blue wire size question.

    I have a 50 Amp RCBO by "FuseBox" My device is part number RTO65030B https://lamplec.co.uk/ProductDetails/?code=RT065030B From a layman's point of view the blue neutral cable looks very feeble for a 50 Amp maximum load. Also there seem to be some RCBO's on sale with the bottom clamp terminal...
  17. events-guy2020

    Portable device safety test question

    I have built a portable lighting game, and need advice on what safety testing would be needed for it to be used legally by private clients. In effect it is an enclosure with 10 sockets (only 5 connected, to 5 separate bulbs, connected to a switch), and 20 tails (only 5 connected to power). The...
  18. LouiseSJPP

    Near off-grid system: question on grid input

    My little house in Spain sits in the forest and has a little wire from the electricity supplier, 20 amps max. It's a fragile link, caught up in trees which fall down regularly. I'm planning to renovate this house with lots of PV on the roof, and make it is independent as I can of the grid...
  19. K

    18th amd 2 question?

    Hi I am 18th edition qualified but can I issue a 18th AMD 2 certificate without taking another exam? Thanks 👍🏼
  20. HappyHippyDad

    A question for those who did the domestic installers course and are now registered with a scheme.

    I did a domestic installers course around 10 years ago (blimey time flies!). This is a level 2 qualification. I then registered with Stroma who fully accepted the course as being a sufficient qualification. All Stroma CPS members are now with Napit. I have had one assessment with Napit, they...
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