Recent content by Rob190

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    Drayton digistat RF3 installation

    Cheers Lee, Trying to make it work but stepping back, your comments have clarified my doubts that this wasn't suitable! Their 'heating engineer' supplied the RF3 & will get it back! Good to have a heating guru around! Thanks, Rob
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    Drayton digistat RF3 installation

    Existing CH Lee
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    Drayton digistat RF3 installation

    Hi, Since getting back into the trade a few years back have installed controllers for boilers with room stats etc & the odd new S plan system - infrequently & admit I am not well versed in heating controls though can follow a circuit diagram! Customer has asked me to install a Drayton digistat...
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    Cooker hood tripping RCBO - head scratcher

    Thanks guys for all your input - great resource here. Big thanks to Marconi for his detailed explanation & solution - hager RCBO sorted it. Very useful to know for the future. Rob
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    Cooker hood tripping RCBO - head scratcher

    Hi, No update as Bosch have only just sent an engineer and have been recovering from a carpel tunnel op - apologies. Bosch will only say a class A RCBO Might solve the problem - difficulty being there was only room for a 4-way board in the small meter cupboard & I can only find double pole...
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    Cooker hood tripping RCBO - head scratcher

    Will do, good to get other views on the problem, cheers
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    Cooker hood tripping RCBO - head scratcher

    Appreciate everyones input. @Murdoch Said socket tests satisfactory - renewed it anyway. As well the normal tests plugged in a 2.5 KW heater which had no issues. Basically when on a short radial circuit hood trips -whether on short leg of ring or ccu socket (cooker circuit approx same length).
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    Cooker hood tripping RCBO - head scratcher

    Don't do PAT testing but did clamp the hood CPC that spikes on a short cable. Will update with the findings of the bosch guy.
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    Cooker hood tripping RCBO - head scratcher

    @Richard Yeah, pretty straightforward now at home - straight 2M run to board = trip, longer run = no trip. Would open hood up but will leave it I think until Bosch have had a look. These faults are sent to test us lol.
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    Cooker hood tripping RCBO - head scratcher

    yeah, I know mate. So as above replaced short leg 2M with IR tests of > 900 Meg - no other circuits connected in board. Duplicated fault on cooker ciruit with similar length. So if the longer leg is absorbing 70mA it doesn't compare with other faults I have dealt with such as leakage on a long...
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    Cooker hood tripping RCBO - head scratcher

    MFT calibrated - EL clamp meter six months old. RCBO's ramp tested (25mA -27mA) Even though RCBO's were new swapped for new ones. Murdoch - I'm looking believe me but trying to understand the science behind it.
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    Cooker hood tripping RCBO - head scratcher

    @Richard - was thinking along those lines though I'm not aware of the method to prove this theory - ring circuit tests were r1 0.63 rn 0.57 & r2 0.97 - average 2 bed bungalow so around 80 square meters. Trouble is I know when the Bosch engy comes out he will say it works on one socket so must...
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    Cooker hood tripping RCBO - head scratcher

    Clamped the fan CPC via a stripped extension lead & got same readings - fine when connected to a longer circuit but spikes when fan speed increased on short leg.
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    Cooker hood tripping RCBO - head scratcher

    Hi, Well disconnected all other circuits and was testing from a 2M run 2.5 T&E that is the first leg of the ring to the socket for the hood - even replaced this piece of twin (even though previous tested fine) & replaced single socket. Done the same again with the socket on the CCU with only...
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    Cooker hood tripping RCBO - head scratcher

    Hi, Been back in the trade a few years now & a regular lurker here (236 I & II & C, 2391, time served etc, 17th) - I have always managed to track down answers using the search however need some help on this one. New kitchen install in a 2 bed bungalow involving a board swap to RCBO's as only...

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