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Having investigated further we found a joint in the cable, thinking this was the obvious culprit from tripping after heavy rain we removed the rubber protective sheathing to find no signs of water or corrosion unfortunately! Although what we have found is the armour has not been joined to...

Great thanks, that makes sense. We are investigating further today encase we find anything obvious before getting the sparky out - don't worry the power is off! :D Will come back here if we find anything unusual!

Thanks. Straight to the point! Very vague question but assuming the cable is not damaged in any way - by only having one end earthed does this increase the chances of a trip? I am assuming not if the external armouring is intact and not damaged. The end which is not terminated into the garden...

Hello Guys, I wanted to try to get to grips with how SWA should be terminated before getting the sparky out! Simple setup with SWA cable coming from consumer board to garden shed. Been having some issues with tripping back at the main supply board (garden shed breaker) so decided to...

@SPECIAL LOCATION thank you. I understand what a ramp test is but do not have the equipment or knowledge to carry out such a test - I hope the contractor will undertake this in due course. For if or rather WHEN this happens again :rolleyes:...can we safely assume that (going back to the...

Sorry been cut off with the recent storms we have had recently...Thanks @binky I think i was experiencing interference with other wires, still trying to source the culprit, finding this device very interesting actually! We have a employed the help of a main contractor to do a full check of our...

I truly do get where you are coming from @Tulip Spark but he simply doesnt have the equipment to do leakage tests….also caravan parks seem to be a specialised area to which certain regs need to be applied and I don’t think he wants to put his neck on the line. Thank you @binky. I realise the...

Ok have an update...earth leakage test was done by myself (sparky couldn't carry this out dont ask) :rolleyes: I noticed when the electric heater (build in heater) was turned on the reading was not steady, the average reading for the caravan was around 2.4mA, now when the heater was on the...

@Sharpend it would take quite some time but it would probably be a necessary task - I have wired up a rig (female to male 3 pin) to go between the supply and meter for each caravan making it easier to do leakage test on the live/neutral (exposed the earth). It just occurred to me that even if...

Thanks for the input @JonesK I have certainly learnt a lot about cumulative earth leakage over the past few weeks and your theory makes complete sense. Although the only issue is the fact the local 16amp 30ma RCBO at the one pitch trips at the same time, this means quite a massive 'random'...

Thanks @binky it is starting to make sense to me regarding the earth leakage from a combination of sources, its a little daunting knowing where to start as there will be literally hundreds of appliances amassing from all caravans on the park. To top it off our sparky is having 'issues' getting...

Makes sense :LOL: To make matters even more confusing the 'problematic' caravan has now since been plugged back into the supply and now everything is ok - I really do not understand this anymore. Here are some facts to breakdown the problem at hand: - 16amp RCBO at 1 caravan trips (no other...

Yes by all means we would get an electrician to inspect - although everyone we have ever had cannot explain why this happens… Can I ask a silly question, how can you tell the rcd we have is not already time delayed?

Thanks for the advice. I may bring this up with electrician, I assume using an s type introduces a certain delay in tripping therefore the rcbo before it should trip first? Is this dangerous for electric shocks etc? You are indeed correct, well spotted. These come on when the water level rises...

From starting this thread I have learnt a lot from reading all your replies, so thank you. Although most of it is still slightly over my head! We have yet again had more tripping issues from the same pitch, with no reason. The 16amp RCBO was replaced outside, this seemed to fix the issue for a...

@binky thank you It would seem we really need to get some earth leakage tests done…I assume there is no way for a person like myself to carry out any tests? My kit comprises of a clamp meter and multimeter! :) As for the earthing rods yes we have earth rods at every pitch plus the...

Further to this our park is split on different breakers - served by the 300mA. Here I post an image of the setup splitting two parts of the park (on the left x 2), plus a breaker (on the right) for another board located on the park (image below) for other pitches (Approx 10). Below this is the...

For reference here is a photo of the setup inside a typical caravan Then again the typical setup outside to which each caravan is hooked up to Note the inside setup has the same rating (30mA) as the outside - although it would seem the load rating is 40amps?

Thanks. We are never at capacity, normally at around 25% so approximately 10 caravans occupied. Always happens when it’s cold which led us to believe it’s stand alone electric heaters causing the issue. Is there anyway around this earth leakage issue? Maybe determine which pitch is causing the...

@SPECIAL LOCATION wow that’s a wonderful response and very helpful, you are correct in that my knowledge is limited - I take no offence :) I just like to understand why an issue occurs and resolve/determine the problem! The overload and leakage issue make sense, and I now understand why it...