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surge

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  1. S

    surge box

    my surge box keeps tripping all my electric only at night and even when in bed and the only thing i have on fridge freezer and lamp in child bedroom none of my main trip board goes just the surge switch which is a separate box in between the fuse box and eletricty meter is it my appliancies...
  2. D

    Lightning surge protection.

    Hi all. I've been asked to go back to a job and install lightning surge protection, its not something I've been involved with before. They're asking for a type 1 SPD that can handle 12.5ka? My usual suppliers don't do them, anybody know the best place to source them from. I think I will need...
  3. N

    Surge Protection

    Hi, has anyone fitted or can recommend a surge protection device for either side of the inverter? I've an install coming up on a property that is in a remote rural location, the customer has told me that he has had electrical equipment damaged twice in the last few years due to lightning. As...
  4. F

    Overvoltage detector and protection 220v

    Hi, I am looking for a device or way of protection single phase 220v equipment from overvoltage. There is a device AVS30 from www.sollatek.com that does this, however if the voltage is above 320v then the AVS30 is itself damaged. Is there something that would protect up to 400v. thanks John
  5. B

    Earthing network surge protector

    I have some apc network surge protectors which require connecting to earth. Is there any reason why I shouldn't wire a UK 3 pin plug with an earth wire only to connect to the surge protector?
  6. C

    Surge Protectors

    Have been asked to fit a surge protector to a distribution board. The device looks just like an MCB without the switch(it is a Hager SPN 140D/R) However the problem I have is that the wiring diagram supplied is very confusing as it uses Euro-style symbols which I am not familiar with. My...
  7. I

    Mechanical force - High Voltage Surge Arrester

    Does anyone know the formula for calculating the force generated during a discharge condition of high voltage surge arrester ? (force applied on the ground connection lead) Thanks!
  8. M

    Baffled and need help/advice

    Hi I know very little about electronics, it's never been my vocation. I know basics and that's it but I'm a bit baffled by something that happened the other day. If I sound like I'm waffling at any point then I apoligize in advance. I went to boot up my PC. Nothing happened, which I found...
  9. S

    RCD Tripping and Surge protection devices

    Has anyone come across surge protection devices being the source of an RCD trip at consumer unit ?
  10. G

    Sensor, Relay and back EMF - 24VDC??

    Hi, I am using an ifm sensor to detect a product coming down the line in our factory. I have connected this sensor in such a way as to energise a 24VDC Relay. No PLC involved here. It does the job perfectly and I am happy with it. Anyhow, I was just wondering if I should be using a surge...
  11. G

    Conspiracy Theory

    Well we have all heard about the proposed additions to the 17th edition 1st ammendment, one of which being "Surge Protection" is this a proper theft, or a series of events that will get the greater public to buy into protection BBC News Story................. :eek:
  12. P

    homes suffer power surge

    trouble at sub stations from scrap hunters Firefighters called to 71 homes after massive power surge | Mail Online
  13. P

    pir`s to be done away with

    the pir will be replaced next year with a, electrical installation condition report. codes one, two, three, and four will be replaced with just three catagories
  14. U

    Surge Protected Socket Outlets

    just having a scan through the examiners notes posted regarding the 2391 noticed on of the comments made was ' "could not state the minimum test voltage to be used and the minimum acceptable value of insulation resistance when carrying out a insulation resistance test on a circuit containing...
  15. S

    Power Surge

    Hi, I need to do performance testing on an electrical appliance. Part of this requires me to check appliance behaviour during power surges and very short power drops. Is there a tool out their I can plug my appliance into which will simulate the above power faults? Thanks, Steve Hewison
  16. M

    Surge protection devices

    Not come across this before but a customer of mine who lives out in the sticks was recently the victim of a major power surge caused by a fire within the local sub-station. On top of all his electronic accessories being fried which he can and is claiming for he basically wants to be protected...
  17. L

    surge protection

    i have 1 of these to wire up this week and im not to sure how these are wired up basically its a home office with dado trunking with 20 single sockets these will be made into the ring and at the end of the trunking will be the surge protection and breaker in an enclosure any advice will be...
  18. E

    RCD Tripping

    I was called out to a friends the other day he was experiecing the RCD trip problem you know the one, it trips you reset, 1 hr later it trips again you reset it, 3hrs later etc etc . I had a look at the circuits and found a ring that was down to .1 of a Meg Iinvestigated further and found the...
  19. R

    surge protectors

    In the regs it says surge protectors must not be higher that category II for overvoltage, anyone know why? I've seen a device being sold which can cope with 40kA overcurrent, but some fuses are rated at 16kA so I wondered if the surge protector is any good. Its not required in the UK as we...
  20. B

    Advice on surge protection extensions

    I have been looking for a 10 way surge protected extension with at least 3m cable but all the 10 way ones I see available online are 2m. You seem to be able to get 8 way or less with 3m or more but not 10. Is there a reason for this in terms of safety / load etc.? Is it safe at all to plug a...

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