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Neural connections inaccessible on Lewden RCBO's

Alan B

Hi

I am coming across more curve consumer units with Lewden RCBO's in and they are causing me a dilemma.

As you will see in the picture the line conductors pass straight in front of the neutral terminal screw, the only way to check torque on the neutral is to remove the line conductors or risk damaging them.

So far providing the line terminals are tight I have not checked the neutrals as I believe i would be doing more harm than good with work hardening and flattening of conductors, and noting this on my report.

What would you do in this sittuation?

Parents
  • 0

    Checking the screw torque is not half as important as knowing the wire is properly clamped . Is it possible to see with a dental mirror or to use a soft jawed tool to pull the neutral wires to see if they move or even come out ? with some fatter conductors it may not be possible even then.

    For thin wires with plenty of slack to provide strain relief, and enough spare to remake if there is a problem, then moving the live out of the way to get to the screw driver hole should be low risk and OK

    Obviously anything that is loose, badly fitting, burnt, or otherwise unwell looking , then both L and N have to come out, I suspect that a mixed and pragmatic approach will be needed.

    Mike

  • 0 in reply to mapj1

    Thanks more or less what I have been thinking. I am interested in your mention of using a soft jawed tool, could you suggest a specific tool as I think it would be a good addition to my kit. I can see Knipex have plastic pliers but I don't think that would protect cables much.

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  • 0 in reply to mapj1

    Thanks more or less what I have been thinking. I am interested in your mention of using a soft jawed tool, could you suggest a specific tool as I think it would be a good addition to my kit. I can see Knipex have plastic pliers but I don't think that would protect cables much.

Children
  • 0 in reply to Alan B

    Long nosed pliers with insulating tape wrapped around the business ends would do the job, and you probably already have both ;)

    tape near the end of the screwdriver might help protect the Line conductor insulation too 

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