class

  1. H

    A class act!

    I'm in process of fitting downlights ... no earth ... no RCD protection to bathroom. Ok, so I'll address the RCD lack by altering the consumer unit to fit one, meanwhile... I tested out (my) new lighting circuit ... greater than 1,000 on the Meggar. I borrowed a nearby earth and loop impedance...
  2. B

    Portable Appliance Testing, woohoo...

    Hey guy's, Hope your all well. For thoso of you who haven't spoken to me befor, i'm a trainee! Wippee... And most of the time in need of a little help. :D I have a couple of question's which i dont know the answe's to and i'm a little stuck! If there is someone who could help, i would...
  3. K

    24 class change.

    ive just wired a class change system all 24v sounders back to a danfoss randall unit, ive been told that i now need a 24v transformer to power the sounders as the danfoss unit doesnt have one built in. so can anyone reccomend me a 24v tranformer that will run 10 sounders please, and how do i...
  4. A

    Class 1 Wiring Query

    Hi, I have a CD Player connected via Class 1 wiring (at the back of the unit) to a line interface unit which then goes into a RJ45 port on my PBX Line Interface Unit is shown below PAM10 Barrier Box - This is all setup for playing music when people are put on hold The CD unit is now showing...
  5. U

    class 2 and class 3

    I am new thats electrical business , what is a class 2 product [ two wires and no earth ?] and is class 3 with three wires [ 3 core] with an earth. Why do some items not require earth What is the meaning of double insulation in laymans tearms [ does it mean two protective layers of...
  6. P

    lighting chain testing

    i was watching the electrical engineers testing some mains light chains they bought from Argos [ fairy lights in bamboo shoots - ornamental thing it was]. They were hi pot testing, they were arguing over the test voltage. Ian said 500 vac and john said no its 3570 vac. They were arguing about...

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