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RCD's and vibration

Paul Brewerton

Where RCDs are installed in areas such as mobile welfare units, caravans, towable catering units, etc)

After being transported from A to B, are they likely to have suffered any detrimental effects (particularly due to vibration) caused during transit?

Case in question is self powered mobile welfare units we have on site, which are tested prior to delivery and found to be functioning correctly. 

Cabin manufacturers have stated that there is no need to test again, after every time the unit is moved, and indeed would be impractical and overkill in many instances, yet I have someone claiming that RCDs fail due to vibration. 

My gut feeling is this is nonsense, if an RCD is tested at any time and found to not function, how would it be determined that the root cause was transit vibration anyway? 

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  • 0

    +1 for the caravan comparison - and in that case it's not always a nice smooth ride even with pneumatic tyres - many a camp site is down what's effectively a farm track consisting of potholes separated by randomly orientated bricks - quite enough to fling anything that's not fixed down from one end of the caravan interior to the other. Ordinary crockery doesn't last a single journey - yet even the cheap never-heard-of-at-the-wholesaler brands of RCCB seem to survive for years without issue.

       - Andy.

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  • 0

    +1 for the caravan comparison - and in that case it's not always a nice smooth ride even with pneumatic tyres - many a camp site is down what's effectively a farm track consisting of potholes separated by randomly orientated bricks - quite enough to fling anything that's not fixed down from one end of the caravan interior to the other. Ordinary crockery doesn't last a single journey - yet even the cheap never-heard-of-at-the-wholesaler brands of RCCB seem to survive for years without issue.

       - Andy.

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