time

  1. G

    Time to stop lurking

    Hello, Long time lurker here, Not an electrician as such but I'm an apprentice trained electrical automotive technician and having moved up the ranks over 20 years i'm currently an electrical instrumentation engineer in the scientific measurement world. I have 18th edition regs and PAT under...
  2. J

    Time / current characteristic curves...

    Just trying to clear something up for myself, hoping someone can put it into layman terms for me. I'm looking at the time / characteristic curves in 7671. For example, 60890 Type B curve, p. 370. Taking the example of a 32a breaker, the line flattens off vertically at 160amps. All understood...
  3. C

    Disconnection Time Requirements?

    Why do circuits 32 amps and under require a 0.4 second disconnection time at 230 volts, but circuits over 32 amps are legally allowed 5 seconds? 115 volts for 5 seconds is enough to cause injury to the human body.
  4. T

    Another outdoor power thread... seems the time for it!

    As usual – I preface this with the fact that I will be engaging the work of an electrician to do this.. however, I like to get my head around the works beforehand. This will NOT be a DIY job – I’m nowhere near skilled enough to contemplate such a thing… but with that caveat in mind – humour me...
  5. 7029 dave

    GMES not seen on here for a long time

    Where is he, have not seen Glen on here for ages, hope you keeping well mate.
  6. M

    Hi I have to draw a lighting circuit that has a time clock in official symbol for the drawing

    Hi I have to draw a lighting circuit that has a time clock in.... I cannot find the official symbol for the drawing anywhere . Can you help please ? Source URL: Lighting Forum - https://www.electriciansforums.net/forums/lighting-forum.95/
    • Martin1971
    • Thread
    • cannot circuit clock drawing help please lighting lighting circuit please symbol time
    • Replies: 9
    • Forum: Lighting Forum
  7. P

    Self-isolating? ... time to upgrade knowledge...

    Hello,during the present and future downtime,folk may be experiencing,it is worth noting,that it presents an opportunity,to investigate some skill gaps,we may not usually have chance to fill. It could be business related,or otherwise,and not limited to the keypad....in the past,i have explored...
  8. B

    Max Tripping Time

    Would anyone know the max tripping time for this earth leakage device? I’m guessing 500ms it’s time delayed but I know that figure is for RCDs and RCBOs, I tested it at 560ms Thanks
  9. pixelpixel

    UK Help with a tampered eco 7 time switch

    So, we moved in a month ago and only just noticed on our first bill that the meter has been stuck on "Low" throughout the whole day. Great! Except our storage heaters have been running 24/7 because they're wired into the off peak circuit, meaning we spent just under £100 in a month :0 Our...
  10. D

    Can I use this Time Delay Switch on a panel heater?

    Just a quick one! I believe this time delay switch should work for my old panel heater (1.25kwh) because it handles loads up to 16A. Can anyone confirm this for me? I had someone tell me I needed a fused spur switch but others tell me I don't. FYI: the aim is to ensure the panel heater turns...
    • Deleted member 108834
    • Thread
    • delay fuse heater panel spur switch time time delay time switch timer
    • Replies: 4
    • Forum: UK Electrical Forum
  11. A

    LED bulbs flickering with time lag switch

    I live in a condominium with a staircase lit by 9 LED bulbs of 10-11 w each. The bulbs are controlled by a time lag switch produced by Hager Electro, with 3-wire connection. Several months ago the lights started flickering, or even fading for several seconds and then going up again, in the timer...
  12. M

    Time Switch Advice

    Hi there We live in a block of flats built sometime in the 60s, which is all electric and has a storage heater in the living room. As to be expected, our electricity bills are a lot higher than properties we've lived in previously which had gas central heating. The day, night and heat rates...
  13. S

    TIme Delay Switch

    Hello, I have a 12VDC battery bus where I charge with solar PV and a wind turbine. The system is controlled using a Siemens PLC. When there is a system fault, the PLC will open all relays, but this included relays that power the PLC itself (example an emergency pushbutton). When restarting the...
  14. T

    multiple circuits stopped getting power same time, replaced all, still no power??

    video explaining/showing problem View: https://youtu.be/VjtsPzzZYrQ this is a eaton cutler hammer circuit breaker. The house was built in 1969 but the breaker was upgraded to this eaton 9 years ago when i bought it. House uses mostly older outlets that are 2 prong, not 3 prong. HOuse does...
    • turnelectr
    • Thread
    • circuit breaker circuits getting multiple no power older power replaced still time
    • Replies: 10
    • Forum: UK Electrical Forum
  15. Vortigern

    SWA supply cables between buildings will not disconnect in required time

    Doing calcs on swa supply to building as sub main from main three phase squard D board for single phase supply off of TN-S supply. I used cable mate from jarsoft and looked up various tables for disconnection times. In all case scenarios it tells me it will not disconnect within the required...
  16. dlt27

    Time delayed rcd’s and fault protection

    Have been to a farm today that has a 100mA time delayed RCD main switch covering a DB that has MCB’s on majority of circuits ( less than 32A) and 30mA RCBO’s on sockets, lighting etc. What I was thinking was does this comply with regs as circuits less than 32A should disconnect in less than...
  17. C

    RCD trip time

    What are the required RCD trip time requirements? And what do you typically see in the real world?
  18. O

    ADE optima Compact G3 set entry/exit time on multiple zones

    Hello I’ve recently had to rewire my home alarm system as the engineer who installed it did such a shoddy job that all the cables were hardly in and causing the system to trigger every couple of moments. I’ve recently been able to get the system working correctly however, I am unable to set...
  19. I

    Who should pay for my time?

    I was recently called back to a new house I had just completed by the customer regarding an intermittent fault. It took a while to diagnose that a small water leak from the boiler flow pipe was gathering in the Honeywell valve and knocking out the RCBO when calling for Hot Water. Having...
  20. T

    1st fix time for timber frame

    Evening all Have many of you worked with timber frame buildings? Im pricing 9 houses which are all timber frame and have easy joist so no drilling of joists All houses are 4 bedroom with TV and DATA points in each room, downlights downstairs and a garage with a light and socket How long would...
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