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Help reconnecting legacy GPO Terminal 52A box to modern master socket (NTE5).

Mipblip — Sun, 30 Aug 2026 07:05:00 GMT

I'm trying to wire up my broadband connection and have run into an old GPO Terminal 52A junction box that I'd like to reconnect to a modern master socket (NTE5).

The incoming cable has solid-coloured wires, and I have a standard modern cable running from the master socket (with the blue/white, orange/white, and green/white ).

I'm trying to reconnect for broadband, as some idiot didn’t take a photo before dismantling. I'm unsure which incoming wire matches which internal wire on this old terminal block.

I've attached photos of the current setup and my attempt so far. Any advice on the correct pairing or cleanest way to wire this up would be greatly appreciated!

Thanks!

Re: Help reconnecting legacy GPO Terminal 52A box to modern master socket (NTE5).

Colin_London — Sun, 30 Aug 2026 11:57:10 GMT

Can’t really give advice other than you should not be tampering with this wiring. Anything the exchange side of the NTE5 is only for Openreach to touch.

Re: Help reconnecting legacy GPO Terminal 52A box to modern master socket (NTE5).

WSH — Sun, 30 Aug 2026 12:09:35 GMT

@Colin_London True, but Openreach don't care unless you cause them a problem.

@Mipblip I would suggest a much bigger picture of that junction box would be useful, as that picture doesn't really show any detail.

@Colin_London By the way, I don't know whether you went back to that thread or not, but I did answer your query as to what a Smart Hub Pro was.

Re: Help reconnecting legacy GPO Terminal 52A box to modern master socket (NTE5).

imjolly — Sun, 30 Aug 2026 13:01:04 GMT

where are the 2 cables exiting the wall coming from? 1 incoming openreach and other connecting to an extension socket somewhere? is the other end of lose cable connected to the NTE5 ? there are 2 terminals with 2 wires connected blue and orange suggesting they are the live connection