present

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  1. G

    UK Relevance of Table 41.3 where Additional Protection is present?

    Reading of 411.3.2 and following suggests that compliance for disconnection <400ms may be obtained using either MCB or RCD. Where an RCD (RCBO in this case) is used for Additional Protection, is compliance with Zs specified in Table 41.3 still necessary? The situation: new installation by...
  2. T

    Safe isolation of rotary isolator when no incoming voltage present.

    Hi all, trying to work out the best way for proving safe isolation of a motor. Motor is fed from a contactor inside control panel, it then passes through a local isolator and then to the motor, the isolator has auxillary contacts so that when it is in the off position the contactor will not...
    • tomodo
    • Thread
    • incoming isolation isolator present rotary rotary isolator safe voltage when
    • Replies: 21
    • Forum: UK Electrical Forum
  3. J

    Why no light with 120volts present?

    Ceiling closet light blew out. Checked bulb. Bulb good. Have 120v leaving light switch. Removed fixture. Have 120v at wires in ceiling when switch is on. When switch is off shows like 2 or 3 volts. Replaced fixture 3 times. No light!! Still have 120volts. If the breaker in the panel is going...
  4. Z

    Metal electric wall heaters - no cpc present.

    I all 4 bedrooms in a rented property, there are cheap metal electric wall heaters. By design their cables are made of two wires - no cpc.They are plugged into a socket circuit with 32 A MCB.How would you code that? AThe heaters are not part of the installation, do i need to put that in the report?
  5. R

    DIY, difficulty new cooktop, present wiring & breaker

    I am at a standstill installing the new cooktop until I can determine if the new one works with the present wiring/breaker. (I am keeping in mind the contractor may not have installed the right wiring/breaker for the original (current) cooktop either, so tell me if you determine this is the...
    • RaeJaye
    • Thread
    • breaker circuit breaker diy new present screwfix wiring
    • Replies: 7
    • Forum: UK Electrical Forum
  6. N

    No mains present... alternatives...?

    Power is required for a roller shutter garage door...however were the garage is located, there is no means of getting 240v power What is the alternatives...?
  7. H

    am i correct in saying that in voltage follower/buffer circuit if there are no resistors present then there is no gain?

    • Hamzah712
    • Thread
    • circuit correct electrical electronic engineering present resistors saying voltage
    • Replies: 5
    • Forum: UK Electrical Forum
  8. S

    Hi all, quick intro.

    Business established in 2006 in the Grantown on Spey area (Scottish Highlands for those who dont know :)) 5 employees at present. Mostly domestic work but a fair bit in the industrial category.
    • Sapper8263
    • Thread
    • area business intro present quick those
    • Replies: 9
    • Forum: The Welcome Forum
  9. spud1

    Should internal links in consumer units be double insulated where TT earthing is present

    Hi, So I was reading the notes on regulation 531.3.5.3.2.201 (Page 156) today and noticed Note 1 that consideration should be given (Where TT earthing is present) to the manufacturer's internal line cable links on the supply side of an RCD being insulated AND sheathed! Does anyone know of any...
    • spud1
    • Thread
    • consumer consumer units double earthing insulated internal links present units where
    • Replies: 17
    • Forum: UK Electrical Forum
  10. A

    Zs values when there is additional RCD protection

    Hi everyone, Consider we have an RCD+MCB protection for a circuit. if we follow the tables for Zs values of a 10A, MCB, type C, the maximum value shall be 1.75 Ohm, this happens when 100A current flows ( as per MCB breaking curve). When the RCD disconnects the circuit in much less current, why...
  11. N

    Why would spike lights trip an MCB as if a dead short is present ?

    Just finished installing 20 x spike lights in a customers front garden. 2.5mm SWA ran from existing junction box feeding existing fence lights. All pulling no where near 1A in total. When all connected and wiring tested, went to switch on MCB and it popped. Rendering the MCB useless as if L-N...
    • NEB Electrical
    • Thread
    • dead lights mcb present short spike trip
    • Replies: 23
    • Forum: Lighting Forum
  12. R

    Confusing EICR, 'Satisfactory' assessment but C1 present

    As a newbie to this forum, I'm hoping that someone can help me understand a particular aspect of the EICR that was done on behalf of the previous owners of my current house. At the time (which I admit was some while ago) I was slightly confused by it but in all the chaos of buying the house, I...
    • Ruby B
    • Thread
    • assessment eicr present satisfactory
    • Replies: 28
    • Forum: DIY Electrical Advice
  13. Midwest

    Misplaced Xmas present........

    I got given my Xmas present early this year, one of those new helicopter things, but I’ve managed to lose it. I was playing with it on Wednesday night about 9ish when it disappeared from my view. Thought I might be able to spot it easily ‘cos for some reason, all the planes stopped flying. But...
  14. H

    Nice early Christmas present, 2391_52 passed today

    Nice early Christmas present, passed my 2391-52 today :)  Then it's the 18th next after the New year. Anyone know of any good trading providers in the North West? Cheers H
    • HRM-ELEC
    • Thread
    • christmas early passed present today
    • Replies: 10
    • Forum: UK Electrical Forum
  15. clanky

    Voltage Present on Earth Line

    Hello. Im an enthusiastic diy'er and whilst finishing off a job that a local sparky came to do, i came across this 'fault' that i find a bit worrying. My house is split up into to two section with separate consumer boards fed from henly blocks. When i was rerouting the earth cables for an...
  16. Gavin John Hyde

    Work in an attic with bats present

    Got a job lined up where the inline extractors for bathroom and ensuite were done by a numpty... left the hose sitting in the loft stuck into the old water tank! Customer has had me round to check it out as it was tripping out, turns out the guy didnt terminate the wires properly and had a loose...
  17. T

    MFT shows 235V, Drummond tester says dead, no live present

    Attended call out at shop. Freezers, chillers and tills were down. Using MFT on V. measurement got 235V plugged into socket. Tested inside socket at terminals with drummond tester, nothing 0 V. Switched MFT to Loop and the neutral was missing. Just a bit puzzled why the MFT shows V. and Drummond...
    • The Ghost
    • Thread
    • dead live mft present shows tester
    • Replies: 21
    • Forum: UK Electrical Forum
  18. P

    Voltage present when fuse has blown with no continuity.

    Can anyone help with the below, there's probably a simple explanation but it's driving me mad. Why I would be still measuring 24v DC at a 24v motor terminals after the fuse had completly blown? And there being no continuity across the fuse at all? This was also the case on the terminals of a...
    • Patrick84
    • Thread
    • blown continuity fuse present voltage when
    • Replies: 14
    • Forum: Electrician Forum
  19. A

    110V present with light switch off

    Hi all, I went to a property to replace a dining room light which was not operating. The dining room had two switches which both switched 1 light on/off. I tested for voltage at the light and noted when switched on that 230v AC was present. When off 110V AC was present. Any ideas? Thanks in...
    • Andrew Harland
    • Thread
    • 110v light light switch off present switch
    • Replies: 10
    • Forum: UK Electrical Forum
  20. Soulsurfer

    Faults central at present !

    Been out on a handful of callouts last few days and had some beauties, such as a socket spurred for t.v. and associated sky box, dvd player etc.. spurred from another in a unit which had stopped working and showed up as no neutral ! this was apparently working last week and just stopped working...

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