ratings | Page 4

ratings

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  1. P

    selection of switchgear ratings

    Can anyone please explain how can i select contactor,olr/mpcb,acb for a particular load for DOL? What should be the maximum load on the switchgear? Should it be 100% or less?
  2. D

    Confirmation on main switch ratings etc

    Hi guys, just want to confirm if i got this right as i dont do many of these and got to get it right for my assessment. Just worrying at moment and seem to be forgetting to most simple things DB supplied by a submains from the house with own seperate isolation switch. DB MAIN SWITCH/RCD...
  3. M

    Contactor ratings

    I understand the meaning of AC 1,3 etc is in regards to different type of loads. But is that per pole or for the contactor as a whole. For example I have a contactor AC-1 rating of 20A. Would that mean it is capable of 20A per pole or 20A total load. I've always just changed like for like but...
  4. A

    Typical Appliance Ratings: What do you assume?

    I'm just coming to the end of a kitchen rewire, and it's just got me wondering .... OK I know what rating the new oven is, but the customer hasn't yet decided on what dishewasher, washing machine.tumbledrier, or fridge. So I'm a bit worried about max load/diversity calcs. I have done a few...
  5. T

    Confusion about down lights & Zones/IP Ratings

    Me and a friend were discussing down lights in bathrooms and what’s required, both had different opinions. 2.25m from floor level is outside all zones right.. I've found this accounts for most bathrooms, Still IP65 Down lights installed above a bath, as sprays from water jets (the shower)...
  6. M

    help in understanding RCD ratings

    Hi All, I am due to start year 2 of C&G2330 L2 in September and wish to get my head around RCD ratings. I think I have grasped the principle of how they work eg: ensuring the line and neutral currents balance. However, I am not sure about the ratings printed on the units themselves. Looking...
  7. C

    Cable sizes & fuse ratings . . . .

    Hi. Hoping that many of you experienced girls and guys out there will be able to help me out. A disagreement regarding cable sizes and fuse ratings. For example : I believe a 2.5mm2 radial ( assuming it is more than 5 metres in length ) should be rated at 16A unless there is convincing...
  8. G

    mcb ratings

    hi there i have just been looking at my consumer unit mcbs could you tell me what ratings are for 1/ immersion heater 2/ cooker 3/ oven 4/shower, mine as 1, 20amp/ 2,32amp/ 3,32amp,/4 32amp, many thanks peter,
  9. D

    MCB type ratings (b,c,d)

    Hi Guys, I have just been on a call out to a ventillation fan within a kitchen sometime tripping out on startup. Basically the fan runs at about 9 amp full on-load current, but the start-up it in the region of 100 amp. Could anyone tell me what rating the fan should be on, and what is if...

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