UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

TonyDuell · 24th May 2019, 4:30 am

I still use my Keynector (so not strictly a Safebloc) for quick tests on mains transformers and the like. I was given it about 40 years ago 'not to be used' as the (thin) plastic baseplate had cracked, exposting the live terminals where you connect the incoming mains lead. I screwed it (using the official mounting holes) to an offcut of chipboard and it's been fine ever since.

One odd thing about the Keynector (at least mine) is that the neon is connected between live (line, whatever) and _earth_. It doesn't pass enough current to trip an RCD, and I guess this warns against an L-N swap on the incoming mains.

24th May 2019, 4:30 am	#15
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,213	Re: Who's still using their old Safebloc? I still use my Keynector (so not strictly a Safebloc) for quick tests on mains transformers and the like. I was given it about 40 years ago 'not to be used' as the (thin) plastic baseplate had cracked, exposting the live terminals where you connect the incoming mains lead. I screwed it (using the official mounting holes) to an offcut of chipboard and it's been fine ever since. One odd thing about the Keynector (at least mine) is that the neon is connected between live (line, whatever) and _earth_. It doesn't pass enough current to trip an RCD, and I guess this warns against an L-N swap on the incoming mains.