On 03/09/2016 21:47, DICEGEORGE wrote:
I'm thinking of installing a Wylex 2 pole RCD 100 Amp 100mA
in a box like on the TLC page linked below.

Just after the main incoming electricity company fuses,
meter and isolator switch,
but before all the henley blocks, consumer units,
solar panel connections, old fuse boxes etc

The supply is TT, I have 2 earth spikes outside the door.

Any advice for or against?

With TT all circuits need RCD protection, so yes - sounds like a good
idea unless you already have an all RCBO install.

Since you need it to discriminate with downstream RCDs it will need to
be a time delayed (aka type "S") type.

(you will still need downstram 30mA trip devices for shock protection
since 100mA trip devices only give installation and equipment protection).


(Have been reading the Yellow 2015 OnSiteGuide and UKDIY FAQ)

[george]

https://www.tlc-direct.co.uk/Product...7ZwaAifH8P8HAQ



--
Cheers,

John.

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