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  1. J

    Grouping factor for JB

    ?? what did we do before spell check and google!
  2. J

    Grouping factor for JB

    Great ?? did have a read of this section but it was late on and often you get a better explanation from someone who can speak plain English as you have sir thank you. The phrase “30% of its grouped rating” confused me. ?
  3. J

    Grouping factor for JB

    Yes all on same MCB. Also noticed no RCD on circuit. 1590700790 I guess that makes sense of course given its all one circuit thanks
  4. J

    Grouping factor for JB

    Opened an IP65 JB surface mount box today (internal conservator) 2 lighting circuits including Switch cables and radial feed from last light all coming into the box. All fitted ok and all secure with Wago connectors no strain on connections. My question is would you need to apply grouping...
  5. J

    Hot tub - TN-C-S

    Slightly different topic but worth checking out the Zappi EV charger as it has some built in protection that states “TN : can be connected to the PME supply. Complies with BS 7671:2018, 722.411.4.1 (iii)” I wonder if Hot Tub Manufactures have or will adopt this technology? Just took this from...
  6. J

    New MFT and testing EV Chargers, spds etc

    Lister I believe it is compatible with another Metrel tester but can’t remember which one it would be worth checking on the website my friend
  7. J

    New MFT and testing EV Chargers, spds etc

    Hi Gavin, I have had mine for a few weeks now and it seems like a great piece if kit however not really used in anger yet as no EVE work yet keep you posted. Some good videos on youtube showing the EVE testing.
  8. J

    4mm radial from 2.5mm ring on 32A?

    Thanks all. Only low usage in garage/mancave literally a fridge and phone charging however I guess it could be used for garden tools. Have to take another look this week and see what I find. There is another single socket on a 20A MCB near the CU so might just run some new 4mm back to this breaker.
  9. J

    4mm radial from 2.5mm ring on 32A?

    Thanks Spoon, I did think that was the case just can’t located the connection at this stage. It has 4 double sockets supplying basic equipment such as fridge etc. I guess 1.5mm would have been ok. I’ve heard the term “lollop circuit” used before but this would usually be the other way round i.e...
  10. J

    4mm radial from 2.5mm ring on 32A?

    Go easy I’m new to this but.. I’ve just come across a 4mm radial (garage) being fed from downstairs 32A MCB ring. Trying to locate the connection but question is does this comply with BS7671? I can’t tell if it’s on a 13A FS or not at the moment.
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