devices | Page 5

devices

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  1. silver surfer

    Time curves for bs 3871 devices

    Apologies if this question has been done to death elsewhere. Where would i find the time/current curves for BS3871 MCBs? BS7671 only illustrates graphs for fuses and bs en 60898 and 61009 devices I am trying to find out how long a 45 amp bs3871 mcb will withstand about 50-55 amps for on start...
  2. B

    en 60947 devices

    Ever tried looking for maximum Zs and disconnection times for en 60947 breakers in the BRB?
  3. B

    Recommendations for anti-theft or theft deterrant devices

    Looking for any recommendations or experience with anti-theft or theft deterrant devices. I hope that the market doesn't require these products in the future, but we have some clients that ask the question, especially small industrial sites and the farming community.
  4. M

    How can I create a grounding plug for my antistatic devices

    Hi I want to know how I can ground my ESD equipment by way of using my mains points. eg I have seen a grounding plug for sale that allows you to clip on your ESD devices. You plug it into a wall socket and it uses the earth point to discharge. The problem is they are not cheap and there must...
  5. C

    alarm cable ccc

    hi im installing one of these http://www.protectingpeople.co.uk/downloads/dpa/Meditell_2_installation_manual.pd pg 27 whats the ccc of general 6 core alarm cable? just planning cable for right side of tranformer [cable between devices] max 2amps roughly a 8 meter run i'll probably just use...
  6. S

    Surge Protection Devices- Amendment 1 Section 534

    If anyone needs to know anything about Surge Protection Devices and the Amendment 1 addition of Section 534 there is a review of a training video on my blog. Before I did the review I knew very little about SPDs apart from they were used incase of lightning. They seem to be amazing little...
  7. L

    Surge Protective Devices - Amendment One BS 7671!

    YouTube - ‪An Introduction to Surge Protection Video‬‏ - here is a sample of a great video produced by learninglounge.com and pheonix contact. I would highly recommend the online version as they have so much more video content to offder and the price is much cheaper than buying all the dvds :)
  8. Markc

    Anti slide devices

    Is anyone else using anti slide devices for the bottom row of panels? Today for the first time we have struggled to get the rail distances and anti slides to work together.
  9. G

    Very Handy Reference for Protective Devices

    Just stumbled across this. May be of interest to many people.............. Reference Guide to Protective Devices
  10. S

    RCD Tripping and Surge protection devices

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

    How many devices are safe per socket?

    Guys - I've joined a company this week as an IT manager/ PBX techie. The Company is growing quickly and are installing some new servers. I have only 4 sockets in the patch room forcing me to run 4 socket extension blocks. I'm worried about how much power I'm drawing. Typically 600-800W power...
  12. E

    Lock Off Devices?

    Hi Guys how many of us use Lock Off Devices or Warning Notices? What are the best lock offs to get and where can they be purchased as i cant find them anywhere to buy?
  13. D

    Tt rcd

    Hi All hope you can define this for me TT installation 100mA RCD, is a main switch required in conjuction with this. I do not think so as a this (and all others ?) RCD conforms to BSEN 60947 so why would some think that an addition method of isolation is required ?? Dev
  14. R

    single pole devices

    Hi All Why must single pole devices be fitted in the phase conductor? I understand that polarity must be assured through out the circuit but is it a bit more in depth than this? Thanks.
  15. B

    Isolators mounted on panel doors

    I have been told that it is acceptable to physically mount a panel isolator of up to 63Amps on the panel door. This has been refuted by a third party citing EN60204-1 clause 11.2.1 which states: - No devices except devices for operating, indicating, measuring, and cooling shall be mounted on...
  16. K

    Door hold open devices

    Quick question guys, door hold open devices that hold the doors open but close when the fire alarm goes off, does these have to be wired in fp200 type of cable. could they be wired in 12v alarm cable?? thanks.
  17. J

    Diagnosing energy draining devices

    I have been having good luck in helping my commercial and industrial customers reduce energy consumption by conducting portable energy audits to track down energy draining devices. As a first step I connect the clamps and leads of my Fluke 434 power quality analyzer and select energy from the...
  18. 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...
  19. R

    Fault Current (Prospective)

    Does this have to be measured at the consumer unit, or can it be done at a socket outlet
  20. D

    RCD trips on incoming power dips

    Property suffers from high number of voltage anomalies - all traced back to high voltage faults by EDF. Problem is that the RCD (80A 30ma) trips on most of these. Mega gives 2M across the circuit. RCD has been replaced as a precaution but same issue. What could the possible problem be? -...

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