device

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  1. R

    Fire alarm - what is this device it should be Resistor as its EOL on a call point -

    Testing a fire alarm panel today as we have to extend it to add some more smoke heads and call points.So prior to work had a look around and made sure zones were identified correctly and readings on circuits were as they should be.On one zone circuit I had a capacitor in the panel across the...
  2. S

    Lighting circuit max cpd

    BRB 559.6.1.6 refers to lighting circuits incorporating lampholders beiong protected by a max overcurrent device of 16A. But what about lighting circuits that dont incorporate lampholders, such as plug in ceiling rose arrangements feeding fluors or lay in grid fittings for example? Can anyone...
  3. K

    Max Zs on RCBO

    Just tested property with a HUGE ring circuit and got 1.4 ohms on a type C RCBO. Given the max is .57 there is no chance of getting this close. Has anyone come across this before and what would be the advice given that it is protected by an RCBO and if you consider a TT system it is better than...
  4. E

    very basic questions on mains plugs for rechargable batteries

    I needed replacement plugs for rechargeable batteries (eg from mobile phone devices) and had heard alot of alarming statements (no pun intended) on general related websites, all telling me to avoid third party adapters that had an incorrect or higher output in voltage or current than what a...
    • electrifying
    • Thread
    • adapter basic batteries battery current device mains plugs questions voltage
    • Replies: 4
    • Forum: Australia
  5. W

    what ohms trips rcbo's

    ball park figure: The actual number is beyond my limited old brain Insulation res. test n&e would trip (set 500v) rsbo/rcd What is the threshold / trip ...not trip, ohms reading on tester I guess some manufacturers may differ slightly, but there must be an inbetweeny? In the old days, n&e...
  6. W

    Grounding (earth?) a device that keeps jolting me.

    For years now the antenna cables in my house would jolt anyone that would touch the metallic tip without shoes or while touching a wall. I am no electrician so I just thought its normal for the antenna to do that. So recently my new DVB-T Receiver that its cover is all metallic would do the same...
    • weltall
    • Thread
    • device earth grounding keeps
    • Replies: 11
    • Forum: Australia
  7. S

    overcurrent device

    on the schedule of test results, what is the kA overcurrent device short circuit capacity? Is it 33.0 kA as the installation is protected by a bs1361 type II fuse in the main cutout?
  8. P

    relay to trigger immersion from PV system

    I am looking for a device to trigger immersion heaters when PV array outputs sufficient power, has anyone heard of such a device. The sunny boy inverters have 423 interfaces but would need some logic I think.
    • polar_boy
    • Thread
    • device immersion relay system welcome
    • Replies: 4
    • Forum: The Welcome Forum
  9. J

    RUN BACK TIMER for E7 CIRCUIT

    Hi All, Firstly this is information l need for an economy 7 immersion heater circuit. My mother has been experiencing power cuts, resulting in her digital timer control circuit, that powers the immersion heater re-setting itself to default factory settings. Because of this she was unaware the...
  10. J

    VOELCB - testing question

    Just found the first one of these I've seen. On a TT system old 1960-70s bungalow. It does test with the integral test button. Is there anyway to test it works in the case of a fault condition? Cheers Jase
    • jasew
    • Thread
    • anyway device earth question testing voltage
    • Replies: 6
    • Forum: Australia
  11. Goody

    Choosing an overcurrent protective device.

    Where an overcurrent protective device is used the following condition shall be fulfilled: Zs x Ia < or = Uo Ia is the current in amperes (A) causing the automatic operation of the disconnecting device… Can I assume Ia is the “PFC”? Thanks
  12. sparkdog

    Minor cert main RCD replacement

    What do you usually put on a minor cert regarding tests for main RCD replacement?Looks like Zs,insulation and RCD times would be about it.Also looks like it has been incorrectly wired from new with its neutral going to the non-RCD neutral bar but it is faulty,won't stay on with L & N on load...
  13. F

    RCD trip times anomilies

    Hey guys i have a question. A 63A 30ma RCD main switch protecting a 20 metre run of FP200 16A mcb in a 2 way ccu. Would you expect the RCD test results to be the same at source as you would at the end of line of the FP200? My NIC qualified electrical supervisor basically says that he takes...
  14. S

    minor works cert help

    hi there i am filling in a minor works cert and in part 2 it asks for 'overcurrent protective device for the modified circuit' and 'residual current device'. i have a split load board with one rcd on it. the work has been carried out on a ring circuit on the rcd side so i assume i put in the rcd...
    • sinaloan
    • Thread
    • cert device domestic electrical work installation minor overcurrent protective works
    • Replies: 48
    • Forum: Australia
  15. Z

    Metrel MI3101 PRO KIT, problems with software EuroLink

    Hi guys, yesterday I have bought "Metrel MI3101 PRO KIT EurotestAT" from test-meter.co.uk, with EuroLink PRO Plus software with ability to print certificates (informations from they website) , and I would like ask a few question to the mates who using this device and software. 1. do I have to...
  16. M

    Smoke detection in domestic premises, Is there a wireless device???????

    Hi, I am currently pricing a job and the drawings specify 5 smoke detectors throughout the premises. I have priced to interlink the detectors together on its own circuit using a three core and earth between each unit. The customer is asking whether there is such a thing as wirless smoke...
    • mgnelec09
    • Thread
    • bases detection detectors device domestic premises roman smoke times wireless
    • Replies: 7
    • Forum: Domestic Electrician Forum
  17. T

    Assessment tomorrow

    Hi All, Got me assessment tomorrow and currently filling the PV commissioning test from. Could someone confirm the "Protective Device" is the DC isolator, and the details requested are its specification? (eg dc rating = the rating of the switch which is 450V) While I'm on the subject, any...
  18. B

    safety device for distribution circuit!

    just visited a house, 3 phase supply, there is a swimming pool in the back garden, the thing worries me is there is only a cut out fuse for the SWA distribution cable, no safety device,cable is about 20m long underground to the shed, what is the best safety device shall i persuade the owner to...
  19. U

    socket in shed, only got a 10a feed

    ive got a 1.5mm fed from a 10a mcb feeding 4 flouresents in the shed and would like a socket for a heater. the way i think it should be done would be to fit a fcu with a 10a fuse and then a socket from the load. obviously there is a risk of some one plugging a 13a appliance in so i would lable...
    • underdog
    • Thread
    • cable device garden protection shed socket
    • Replies: 4
    • Forum: Australia
  20. I

    Help please. A2/A3 radial circuits

    Hi all. New member, first post. I'm only in training at the moment and i'm a bit stuck. My text books refer to A2 and A3 radial circuits, but for the life of me I cannot figure out what the difference between them is. Can anyone help or point me in the right direction? I would be very...
    • Ian.H
    • Thread
    • check circuit circuits device insulated please protective radial table
    • Replies: 2
    • Forum: Australia

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