device | Page 9

device

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  1. 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...
  2. 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?
  3. 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.
  4. 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...
  5. 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
  6. 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
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. C

    Form 4 - Overcurrent Device - What to put down

    Hi On the form 4 - in the brb - in the box entitled: Overcurrent Device 4 Short-Circuit Capacity: ........kA What is that referring to? Is it the RCD in the cu? Just wondering as this box is above the sub headings of type and rating - which I know are for the circuits individual...
  17. La Poste

    Functional testing of MCB's??

    It might sound a bit daft but is there any way of functionally testing MCB's? It's easy to confirm whether an RCD is functioning correctly but is there any way of testing an MCB? I've just been reading about counterfeit goods and how some MCB's are manufactured with absolutely no working parts...
  18. T

    Do E Stops Need a manual reset or not

    Hi All, This is an issue with air handing units that have E stops fitted to stop the supply fan and main fan unit. At the moment on most AHU,s there is no manual reset on these units. So once the E stop has been activated the unit will re start when the stop is reset. It seems that there...
  19. P

    **CHARITY AUCTION** Master lock lock off device

    another generous donation this time by the electrical safety council I think we all know how important it is to lock off when working not only for ourselves but also the customers. these are great kits and I would alos like to thank Clare Fleming for arranging this for us. get bidding and stay...
  20. M

    What Is This Device

    In the NIC Snags and solutions book (ISBN10- 0-95310589-x) on page four there is a diagram of a single phase consumer unit instalation. Going from right to left there is a DIN mounted master switch followed by two busbar terminals conected to each of the RCDS. I would like some of them but...

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