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rll13

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Hi,

I would like an opinion regarding Park Homes/ Static caravans. At present each dwelling is fed via buried 2.5mm 3 core SWA with 20amp C mcb from a local distribution centre. The armour and one core are connected together to provide a combined earth.

My question is that measured Ze at the Park home connection is around 7 ohms. The home has a 30ma RCD as an incomer. As this is a TN system and not TT would anyone adivise an additional earth stake to try and lower the Ze or will this introduce additional problems.

If this were a TT system the readings comply with regs. The RCD trips at rated values.

Many thanks

RL
 
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rll13

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