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  1. M

    TN-S & TT on same installation what should I class it as?

    got a 16mm earthing conductor from main supply sheath goin in to the MET + an earth electrode(rod) next to the supply with a 10mm earthing conductor comin off it to the MET Should I class it as a TT system for test results and mark the EIC as TN-S & TT :nonod:
  2. H

    RS switch mode power supply

    Hi Guys, Has anyone come across this SMPS from RS, 445-107. Blurb says its class 1, because it has an earth pin. I cannot get a circuit from the earth pin to the '-' of the output. I have sent RS a question about this but have not had a reply. Must fail it as a class 1 appliance.
  3. M

    Class change on a Gent 4 zone fire alarm panel

    A bit flummoxed here guys, any advice gratefully accepted. I need to sound the bells on a Gent 4 zone panel for class changes in a school. To do this, I must short out terminals C1 & C2 within the panel from a remote timer. The timer is an approx 70mtr cable run away. I have run a 1.5mm 2c swa...
  4. scarlet7

    Class 1 Earth Continuity for PAT test.

    Hi guys, When performing an earth continuity test on class 1 appliances can you get away with just using a 200mA current on every piece of equipment? Having been on the 2377 course they say to use 1.5 times the fuse rating upto 26A for non IT. Need clarification as to what is right...
  5. H

    no class II markings

    No class II markings = class I test. We have Rascal scanning equipment. plug in IEC lead. IEC lead passed test, after replacing 13a fuse with 3a fuse. Switched mode power supply, 50-250vac input. 12vdc output. no class II markings, all plastic body, but earth connection via the IEC lead. So...
  6. F

    Open Circuit or High Resistance - THE GREAT DEBATE

    A class of thirty students are presented with a question for there level 3 class assignment. L1 AND L1 = 2 Ohms N1 AND N1 = 2000 Ohms E 1 AND E1 = 2 0hms 29 of them say open circuit on the neutral. 1 says it is a high resistance fault because it is a finite reading and there for it can not be...
  7. S

    Class 2 insulated spotlight ?

    Need to put something like a four spotlight track onto an unearthed lighting circuit. Any ideas?
  8. J

    Pat testing: Class 2 printers and laptop power packs????

    Hi I'm a little confused, sure this has been asked on here before but I'm pretty new to forums Could you tell me if the following about PAT testing is correct Class I printer, plug in printer IEC Lead into pat tester test as a lead Earth, Insulation and Polarity. Plug lead back into printer...
  9. E

    CASH back amounts on green deal scheme

    Cash back amounts on green deal CASH BACK Scheme www.eco-deal.co.uk Loft insulation including top up £100 Cavity wall insulation £250 Solid wall insulation £650.00 Flat Roof insulation £390 Room in roof insulation £220...
  10. B

    Class II outside pendant.

    Can anyone tell me where I can get hold of an outside pendant (coaching lantern style) in plastic or polycarbonate? I can find wall-mounted versions but the customer wants to replace his existing (metal) one without paying to run a cpc to it. Thanks.
  11. R

    EICR departure code for bathroom.

    I am compiling an EICR on a period style house with wiring dating back to mid 60's. The installation has a fuseboard with 3036 fuses protecting all circuits. The bathroom has neither RCD protection or evident supplementary bonding arrangements although there is a 10mm bond to the main water...
  12. D

    RCD for TT system

    Hi all, I have just read an old periodic report that has highlighted a TT system that has an RCD main switch mounted in a non insulated enclosure (metal) as a category 2. Does it state anywhere in the reg that the RCD should be in an insulated (plastic) enclosure. I've had a look but cant find...
  13. S

    R1 and R2 parallel earth

    hi guys and girls, any ideas on why when cunducting an R1 and R2 and also polarity when it was a closed circuit i had 1.87 ohms but when opened circuit 238ohms. this was on a lighting circuit pme system all correctly main bonded and zs complied. thanks
  14. O

    Class II debate

    OK here is one to get your minds going class II equipment lets say you are testing a hot air gun just like in the COPs the earth lead from the tester is on the metal tip you plug it into the PAT tester that links the L&N together injects 500vdc and if there is any leakage to the metal tip then...
  15. U

    Laser Pointer Class IIIb

    Hello, I recently acquired a laser pointer. It is green, take 2 AAA and states it is less than 500mw, and is class III. Is there a way to establish exactly how powerful this is and also, obviously I wont be pointing it at any planes as Im not a complete mug, but is there an easy way to test...
  16. U

    Lighting circuit with no cpc

    If on a EICR you were to come across lighting with no cpcs. Is this acceptable. Presumably if it's all plastic ad class II products and fittings then maybe it could be but I'm think really it will need cpcs to be run with it. Even at light switch withe tak backbones as in the event of a fault...
  17. S

    PPE For Service Fuse Pulling

    Hi All What PPE do you chaps wear when having to pull a service fuse for a CU change. Also has anyone pulled a fuse that has been damaged in any way leaving a dangerous situation? Thanks
  18. C

    R1 R2 test for GU 10 Class II lights - Info

    When it comes to obtaining R1+R2 on lights (GU 10, Class II type) is there a work around solution without removing downlight fittings (due to decor/ceiling being messed up)?
  19. M

    PIR problem

    got to do a PIR on a domestic installation, had a quick look to give me an idea what i was letting myself in for.looked at lighting circuit dropped a ceiling rose down, two wires live and neutral no earth, metal switch faces metal light fittings. can't see anything in REGs. does it require a...
  20. Paul.M

    Class I light fittings, no Earth, what would you do?

    Did an EICR last week, a few small things to clean up but the main thing is that 3 of the upstairs light fittings are class I metallic with no cpc/earth. Doing the remedials tomorrow and talking to another spark he says that the earth to the fittings has to be a min of 4mm csa! Now, I've...

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