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    Exposed National Wiring Standards

    A couple of months old document, that I had not seen, https://eandt.----------/content/articles/2022/05/exposed-the-national-wiring-scandal-putting-lives-at-risk/ Apologies if been posted before.
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    Current 18th Edition Compliance

    Hi guys, I expect this topic has been covered before, In rented accommodation including business premises, should the electrical installation be up to current BS 7671 Regulations.
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    WiFi Fire Alarms to Residential Buildings only ??

    A recent conversation with Aico technical enquiring to maybe fit wifi devices in a commercial environment, workshops, business units. Surprisingly, you will need permission from Building control or a Fire Chief before installing them as they are for Domestic or residential use only. Does this...
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    System Impedance

    Hi Guys found this in a Ariston 9.5kw Water heater instructions quote ''The product should be connected only to a supply with the relevant system impedance no more than 0.237 ohm. Restrictions to connection may be imposed by the supply authority on the use of equipment in the actual...
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    Immersion heater element source

    Hi Guys, Can anyone suggest where I can purchase a 4 Kw / 230v immersion element as in photo 1000mm in length. I have not come across one like it, or maybe it is a de-constructed element from a triple element unit. 3 are used for heating water in a Large ST/Steel vat. Any help would be much...
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    EICR no SPD &LPS Enquiry

    Hi Guys, Recent EICR carried out at a Church & Hall. Would you code no SPD present at Supply origin & should the Lightning Protection System be connected to the Main Earthing Terminal via another SPD.
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    Electrostatic Earthing

    Looking for advice involved in Earthing & Bonding in decanting of Flammable liquids. Any electrician been hands on in chemical manufacturing .Thanks in advance.
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    Earth Leakage in Processing Plant

    Hi Guys, Have a problem with a Omron Switch mode power supply & Omron Control Relay Which is only switching a 3phase mixer paddle to stir liquid while in the heating process. The control gear is fed from a single phase supply plugged into a RCD protected socket. The Rcd trips within 9ms @ X1. I...
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    UK LED LIGHTING

    Can anyone recommend LED lighting for a garage workshop. They have wall mounted HPS Floodlights at the moment & when the 3 phase compressor cuts in, most go out & restart after a while. I have fitted some LED ones in the past that they have supplied, which failed in 2years or less. I was...
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    Trunking CPC Continuity.

    Hi Guys, an old existing 25mm - TP & N SWA Supply cable is glanded (No Banjo) to a 3" Metal Trunking end cap, & the remainder of the circuit cables are contained in the same trunking forming the CPC back to the Distribution Board. With a method 2 continuity & an insulation test, can you be...
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    Type of Installation

    Hi Guys, I would like your take on this Installation. The Supply source is in a switch room & the cable is terminated at the rear of Switch Fuse Disconnector, see photos. The intake at the Distribution Panel is also shown. You will see that the Neutral is connected to the panel metal work. The...
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    EICR Responsibilities.

    Hi Guys, I need verification as to who is responsible for 5year Testing & Inspection of commercial units. The tenant or Landlord? Scenario, a unit/ building Electrical Installation ready for renting is Tested & brought up to a current edition of the regs before handing over, Probably a bare...
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    UPS voltage Rating Specs

    Hi Guys, In IT UPS back up systems is there a general upper voltage rating before the device will compensate for overvoltage or is it down to each manufacturers spec. Have been experiencing reports claiming they have been alerted of overvoltages. This I will need to check out. Many Thanks!
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    LED Lighting

    Hi Guys, Can you mix Hi Frequency Fluorescent fittings with Led fittings on the same radial circuit? Have 2 led fittings flickering. I know it could be cheap drivers. Also, could anyone recommend 5ft single or double Led 50/80W battens, which are weatherproof for warehouse replacements? I did...
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    3phase cut out for Isolation

    Hi Guys, Have a situation with a Wylex 60A single phase switch fuse isolator that is overheating & conductor insulation is burnt. It is supplied by 25mm tails from a henley block. There are also more henley block connections across all phases which I don't like at all. Anyway, for safe...
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    Garage Workshop Electrical Safety

    Hi Guys, Original commercial vehicle workshop Installation has old Wylex single phase RCCB units with 2 socket outlets each. Later someone has installed a new 32 A single phase RFC to each workshop. The RCCB unit is fed from a Hager 32A RCBO . So rcd test trips the RCBO, not the RCCB. Both...
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    High Integrity Earthing

    Hi Guy's, Need your take on a commercial office IT environment. I am getting earth leakage total of 26mA, okay, spread over 22 workstations & 4 Server & ups IT devices, not bad. The power RFCircuits are fortunately spread over a split load board / 2 RCD's. No nuisance tripping reported. Subject...
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    120W LED Corn lamp replacement

    Hi Guys, I have been asked to change Metal halide lamps for LED E40 Lamps in Floodlight fittings. The manufacturer recommends not to fit lamps above 60watt to enclosed fittings, due to overheating. Is there a fan or a way around this. These lights are used all over the garage warehouse & outside...
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    120W LED Corn Lamp Replacement

    Hi Guys, I have been asked to change Metal halide lamps for LED E40 Lamps in Floodlight fittings. The manufacturer recommends not to fit lamps above 60watt to enclosed fittings, due to overheating. Is there a fan or a way around this. These lights are used all over the garage warehouse & outside...
  20. E

    RF / EMF Interference

    Hi Guys,Haven't posted for a while ,should be retired really but you are never too old to learn. Any solutions to Radio interference caused by LED lighting or Photocells would be be most useful . Many Thanks in advance.

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