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  1. M

    Stop button for a compressor, remote.

    Morning guys. May I have some guidance please. Basically the client has a motor vehicle workshop, which has students and teachers inside. On the car park there is a small compressor house with a three phase compressor in it. The back wall of the compressor house is the wall of the workshop (in...
  2. J

    rcbo

    testing a 40A rcbo on a shower today and got >400ms at x1 is the rcbo knackered i removed the load and tested it and it still did it, i dont want to get another 1 and it do the same thing. IR was >299Mohm Zs 0.16 Ze 0.11
  3. J

    trouble with newly installed MK c/u

    recently changed an old fuseboard to a new MK consumer unit with 2rcbo's and then RCD with 5 mcb's on it, now i IR all the circuits and all came out at <299Mohm but since day 1 the rcd has tripped whenever a high load is switched on? i tried the up and down ring and the fridge radial on 1 of the...
  4. S

    RCD won't trip

    Hi can anyone help. I have just done an extension to an annexe, using 3 core 1.5mm swa for the lighting and 4 core 2.5mm for the ring into a 2 way CED Garage Consumer Unit with a 63A 30mA RCD, 32A and 6A MCBs. Ze, Insulation resistance and continuity test came out fine testing with a Megger...
  5. R

    One hourcentral heating timer for student let

    Can anyone advise me on this: 1. Student house tennants always going out and leaving the heating on (home for xmas - heating full blast!) 2. Gas CH from backboiler heats water and house controlled through normal programmer 3. I want to have hot water permanently on. 4. I want to have a "push...
  6. B

    Wrote nice long letter pressed button and it disappeared

    Wrote nice long letter pressed button and it disappeared no time left will do it again later.
  7. J

    Measuring earth loop imopedance Ze using FLUKE meter - settings??

    Guys (n' girls of course) I have just started using a 1653B FLUKE and when testing earth loop impedance Ze (ie. impedance of supply - tested at supply origin), I presume I use the 'LOOP IMPEDANCE' setting (line to protective Earth L-PE) using the Z1 Hi current setting, and NOT the 'Earth...
  8. S

    Panic button for soldering equipment

    Hi I do some electronics work. For safety sake I was wondering if there's a type of panic button I could use to cut off the supply off a socket which I'm going to install. It will be run off an existing double socket. Once this panic button is pressed the power should stay turned off until I...
  9. I

    RCD ramp test

    Hi, just tested a fuse board: 1*main switch lighting circuit lighting circuit smoke alarm circuit ----------------- 1*rcd Oven Sockets Sockets Sockets Security Alarm Water Heater ----------------- RCD failed 1x with ?400ms reading (megger MFT) performed the ramp test and the RCD tripped at...
  10. M

    rcd not tripping

    hi to all i need a bit of help as i dont normally deal with 3 phase i have come to carry out a periodic inspection and carried out a rcd test on varrious circuits and it wont trip at 1x test the system has a old mem d/b with a rcd as a main switch what would cause the rcd not to trip out...
  11. ringer

    What does the Facebook Connect button do?

    f Connect button at the top of the forum home page - what does that do? I clicked on it and it wants access to my profile on FB. Did 'do not allow' because I'm not sure what/why it is doing this.
  12. N

    Like button

    I have pressed the like button a few times , and have noticed it says that i like the comments with a love heart , yes i may well like it , and its getting closer to valentines day but a love heart , why not a pint of beer or kit kat chunky or coffee mug lol:rolleyes:
  13. C

    i like button

    i like this feature, and i'm fairly sure its new, if not i missed that one big time! :D but i do wonder if the heart is a bit much??? :rolleyes::rolleyes: i mean guys i like you but i'm not sure i want to "heart you" :rolleyes::rolleyes: danny
  14. D

    Fluke 1651

    Hi Chaps thinking of putting in for a part P scheme and seen a Fluke 1651 advertised for £180 out of calibration is it suitable? Decent how much does calibration cost and how long does it last?
  15. E

    Megger 1553 help

    replaced my battered 1552 with a 1553 and have noticed that when carrying out a continuity test , with leads open >999 with leads joined get a valid reading, when breaking leads open again the reading stays and wont return to >999 and this i find very annoying? any ideas anyone? the lock...
  16. C

    RCD Trip Time

    I think I know the answer to this one - but could do with some clarification. 30mA RCD trips out at 51.8mSec on 1 times test & 38.7 on 5x Test values seem high to me - Domestic installation. Repeated the test 3 times just to make sure. RCD probably 11 years old and, of course, never had the...
  17. L

    bloody door bell

    hi every one new build we done about 6 months ago, had a call to say that the door bell does ding but doesnt dong.... called in today, the chime is 8 - 16v got a 8v tranny which actually gives 10.5v. when push button is pressed the voltage drops to 7.9v but the ding just doesnt sound right...
  18. W

    inter connected smoke alarms

    hi guys, can some one tell me that if you push the test button on smoke alarms, are all the inter connected alarms meant to sound too. when i tried it today only the smoke alarm that i pressed sounded. all the alarms are inter connected.
  19. S

    How does a IR Tester work?

    Hi guys, 1st post, so please be gentle with me! I know how to use one but does anyone know how an IR tester actually works? I'm using a Megger 1502 and testing at say 500vdc does it actually apply 500vdc all the time you press the button and deliver 1mA for the whole time? And how long should...
  20. M

    push button time delay switches Arrh!

    hi there every one done a periodic on what can be only describe as a pre site constrution then lobed in place accomodation building for one of her majestys places etc. opened up a push button time delay switch thinking standard or conversion but no :eek: parallel using twin and earth...

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