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Recent content by daveR

  1. daveR

    Help with a picutre - is this an old battery?

    Many thanks for the responses. It is really useful to get some feedback this being one of my first threads. It is an industrial or light industrial unit i think. Not sure about crances or other equipment though.
  2. daveR

    Help with a picutre - is this an old battery?

    Hi - many thanks for the reply. I was not planning to do any works on the equipment. The query was raised by a building survey and I was just asked to comment on what it was!
  3. daveR

    Help with a picutre - is this an old battery?

    Can anyone shed some light on this picture I was asked about and give me some information. It looks like an old battery bank but I have not seen this type of cell before. Any help appreciated! Many thanks
  4. daveR

    question of sizing LV switchgear

    Can anyone help - I am upgrading a building supply to 1000KVA at 400V and installing new switchgear and a standby generator. The client has a spare generator rated at 1250KVA. The electrical contractor says the size of the main switchgear should be based on the rating of the generator not the...
  5. daveR

    Underground LV cables

    I need to connect a 400V generator to a main switchboard and I think it would be better to use parallel multicore 4x185mm2 or 6/8x95mm2 XLPE/SWA/LSF armoured cables in underground ducts - but I've had some feedback that this is not a good idea and it is better to use single core cables. Can...
  6. daveR

    Automatic Transfer Systems

    I'm looking at an automatic transfer sysmtem to swap between two 400V power sources ("normal" mains supply and a standby generator) using 2 interlocked ACB's. My question is what side of the main ACB device should we put the voltage sensing relays? I've been told we should not put...
  7. daveR

    Switchboard Earth Bars

    OK, where you've got a dedicated transformer it is common to earth the source neutral at the first point in the LV system where the neutral is terminated - the main LV switchboard. I agree with previous answer that sizing should be done to ensure the fault withstand current can be stood for...
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