Caravan supply

[Blues r tingly]

Hey guys, no-one i know deals with caravans and i require to install the electrical supply for the static unit to plug into, the units cu is rated to 40amp with a blue 4mm arctic flex and 32amp male commando to connect to, this inturn seems odd to me as the unit will never be able to draw more than 32amp so y have a 40amp breaker?
Any thoughts would be appreciated, i know if i put a 32amp 30mA rcbo on the female it will not matter but it will not reach its proposed design?

 

[Richard Burns]

You would need a caravan hook up unit with 32A outlet socket or have a 32A to 16A adapter on the cable.
Read section 708 of the BGB for the details on what is required for the supply.

 

[richy3333]

As above^^^ and good luck banging those earth rods in

 

[rob28870]

Hi Blues,

The link that Richard gave you (Thanks Richard) to the Fastlec site for Rolec only shows 16A outlets, but knowing the manufacturer, I think they'd be able to come up with a 32A socket version without it being a daft price. Let me know if you want me to look into something a bit more bespoke for you.

 

[Rockingit]

I think peeps have overlooked the fact that it's a static caravan, not a park 'hook-up'.

32A ceeform (commando) would be perfectly normal in this situation. To the OP - the fact that the device used to make the connection has a maximum rating (32 amps) does not mean that it can't be overloaded, it's only 3 brass pins - nothing clever! Therefore, the fuse protection at each end is what matters. You could change the 40A internal fuse in the caravan for a 32A if you felt happier, or just as easily make your supply end 40A and change the ceeform to a 63A one - so long as the internal fusing was still correct for the size of cable. You also need to refer to the relevant regs as mentioned above for RCD protection requirements.

 

[rob28870]

I think peeps have overlooked the fact that it's a static caravan, not a park 'hook-up'.

Good point, the static stuff is here Rolec Static Hook-ups, and I'm sure Rolec would knock you up a 32A version.

 

[Blues r tingly]

Cheers guys, great help
i was planning on putting the static on a 32amp rcbo after putting a sub cu in from mains position but after further investigation there is a 63amp 30ma rcd that is directly fed from the mains meter , TT system so surely whole Setup is protected, putting a 32amp 30ma rcbo in would only cause issues with discrimination between devices or not? The plan was to take tales out of the henley to a sub meter then on to a 63a mains breaker feeding a 16mm swa (overkill) supplying a small consumer unit bear the static position where i would have 32a for static 16a for freezer/tumbleD and 6a for outside lighting
thoughts appreciated