Armoured cable for BG twin outdoor socket

coop5 · 3 Jun 2020

Hi all,

I need to run some armoured cable under a patio which I am laying. I will not be getting an electrician in for some time so I just need to know what cable to use?

I will not be wiring this in myself but I need it to be approx 25m worth which will be hard wired in.

Its a British General 13a 2gang socket IP66.

I have no idea about electrics, the socket will be used to power outdoor lights and projector

Thanks all

winston1 · 3 Jun 2020

You need to talk to the electrician you will be getting in in some time. If this is a new circuit it is notifiable and you sparks will need to sign to say he designed and installed it.

AndyPRK · 3 Jun 2020

Swa cable usually. 3 core (or 4 core if you want more toys there later)

1.5mm or 2.5mm

333rocky333 · 4 Jun 2020

Power circuits need to be 2.5mm minimum , dont they

bernardgreen · 4 Jun 2020

coop5 said:
I just need to know what cable to use?

Better to use a duct now and then pull a cable in when the electrician does the installation.

SUNRAY · 4 Jun 2020

coop5 · 4 Jun 2020

Thanks all,

would it need a duct anyway ? It’s going under 6” of MOT1

bernardgreen · 4 Jun 2020

coop5 said:
It’s going under 6” of MOT1

6 inches, about one spade depth, the cable could even be damaged while the patio is being laid,

Small puncture in the outer sheath from a sharp edge in the MOT1 and moisture penetration could, over time, result in the armour rusting away.

Cables laid without ducting should be laid in sand or similar "soft" material

Simon35 · 4 Jun 2020

333rocky333 said:
Power circuits need to be 2.5mm minimum , dont they

Do they? Says who?

EFLImpudence · 4 Jun 2020

Simon35 said:
Do they? Says who?

Strictly speaking - no and no one.

However, for a double socket a minimum of 2.5mm² is correct.

Depending on where the supply connection is made and other possible concerns, then it might need 4mm².

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Armoured cable for BG twin outdoor socket

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