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MAIN SWITCH ON CONSUMER UNIT WITH TUNNEL TERMINALS AND 2 SCREWS

John Peckham
I did a periodic inspection today on a new installation with a 15 way metal LyX consumer unit. A nice job but no circuit chart, circuit breakers not marked up to show function and an open circuit on the neutral of the kitchen ring so outcome "unsatisfactory".


A 3 bed house recently completely refurbished with an electric boiler and electric cooking so quite a high potential maximum demand. I was very pleased to see the BS EN 60947-3 main switch had tunnel terminals with 2 clamping screws just like the good old days. Well done LyX nice to see and much better than cage clamps. The sparks even had a Whiska gland on the tails.As usual quite a few terminals need needed tightening including the main switch and more neutrals than lines. 


I found a defective RCD on a BG garage board last week. I was admiring the quality of the unit with the die cast cover and the IP rating but disappointed to find it did not trip on the instrument tests and also the test button. The RCDwas replaced and I have the defective unit to dissect when I have time. I will let you know how I get on.
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    John Peckham:

    I did a periodic inspection today on a new installation ...



    I still don't quite understand why it should not be a multi-signature EIC.



    I found a defective RCD on a BG garage board last week. I was admiring the quality of the unit with the die cast cover and the IP rating but disappointed to find it did not trip on the instrument tests and also the test button. The RCDwas replaced and I have the defective unit to dissect when I have time. I will let you know how I get on.

    Directly after my training, I installed one of those at home. Built like a brick privy! I had no problem at all with the RCD in contrast to the previous one which was dead as a dodo.
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    John Peckham:

    I did a periodic inspection today on a new installation ...



    I still don't quite understand why it should not be a multi-signature EIC.



    I found a defective RCD on a BG garage board last week. I was admiring the quality of the unit with the die cast cover and the IP rating but disappointed to find it did not trip on the instrument tests and also the test button. The RCDwas replaced and I have the defective unit to dissect when I have time. I will let you know how I get on.

    Directly after my training, I installed one of those at home. Built like a brick privy! I had no problem at all with the RCD in contrast to the previous one which was dead as a dodo.
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