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  1. H

    Bosch PCL 20 Cross Line laser

    Hi Guys looking on buying a laser level, what do you guys think of the bosch pcl 20, anyone used one before? Thanks Craig
  2. S

    R1 & R2 Testing Help

    Just started testing at college and not sure of the following in regards to the R1 + R2 testing: 1. Why are the readings in a ring the same or similar? Compared to radial? 2. Why do you cross connect line and cpc in a ring to carry out the R1 + R2? Thanks Steve
  3. C

    Cable Tray cross bonding?

    I am running a load of cable tray at the minute. I said it required cross bonding with 4mm cable, but my boss said it wasn't required as we are using metal joiners........... Who is right?
  4. K

    Two water mains/ two bonds??

    Hi all. im working in a small little building which has toilets/meeting rms/office kitchen etc, the water main comes in at the kitchen, ive pulled a cable in to bond this however while in the toilets today i noticed another water main coming into the same building so it has 2, however i do...
  5. M

    Paperwork for CU change and a few additions

    Afternoon all. For a CU change and, at the same time, the installation of 3 new final circuits I have done the following paperwork: PIR - prior to cu change EIC - To include new CU and New Circuits (existing circuits fully tested too, as I had to repair most of them following the...
  6. S

    3 phase cross cut saw problems

    hi all, a mate of mine is having some problems with the above saw within his workshop. symptoms of the saw are: apparantely all intermitent! 1, blade just rocks and doesnt spin in either direction 2, sometimes motor just buzz's 3, sometimes starts in reverse and stops and starts spinning...
  7. S

    Delta...or criss cross?

    Hi folks, would appreciate a little help here. I'm used to three phase 12 wire star configurations on gennys, but I've just come across a small (10KvA) set wired for single phase. I can't work out if it's delta, double delta or criss cross. U1 = 1 and 12, and is the L1 take off point. V1 = 4...
  8. C

    Cross line laser levels

    Going to have some spare moneys the end of this month, so I thought I'd buy myself a christmas present.. Been looking at the Dewalt DW087K ; Best price I've found is £135.. I know there's ALOT cheaper out there, but I do like to believe that if you pay the money you usually get gear...
  9. G

    Cross bonding at boiler

    I could do with a bit of advice on how to and why we should cross bond to the pipes that enter and exit a central heating boiler. Should each of the water pipes be cross bonded. Should the gas pipe be bonded? I understand that that the incoming services must be bonded as they enter the...
  10. S

    Bonding of central heating boiler

    Hi all, Do I have to bond all the copper pipes at the combi boiler if the 3 conditions below are met? i) 30mA rcd protection on all circuits ii) Disconection times are met iii) Main bonding to gas and water in place. Regards
  11. P

    Ring main testing

    hello I am confused rewired a house this week but I dont do much testing on the ring main as a domestic installer normal kitchen fitting radial cooker extra lights etc I rememberr being told this takes a bit of getting used to this is what has happened so far r1 = 0.48 rn=0.72 r2=0.90 I know...
  12. G

    Cross Bonding

    Hey up, I understand that if disconection times can be met there's no need for supplementry bonding, but is it still necessary to cross bond say pipes in an immersion heater cupboard or underneath a boiler? I don't mean coming off a lighting circuit with 4mm, but just linking them together...
  13. M

    Cross bonding or not..?

    Hi, hope someone can answer my question. I have recently installed a new bathroom, the bath is steel, and i have no electrical appliances or points in the bathroom, except for the lights of course. When i had the old floor up i noticed that one of the water pipes was clamped and a cpc runs...

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