Low Zs at socket, Any ideas??

[TheCodboy]

Hi all, while testing Zs on a ring final circuit i found one socket to have a particularly low Zs. All others were reading between 0.25- 0.30 but this one was reading 0.08-0.09. Its got a brand new Crabtree double socket installed. A full RFC test has been carried out, and this is the only socket with a reading this low. Obviously i know its better than high, but was just wondering if anyone could shed some light.
Its a TNS system, Ze 0.26

 

[DPG]

I only have personal experience of 5 MFTs, only one of them had any issue which was a fluke with a dodgy 4mm banana socket. Apart from that they’ve not had any need for pampering

1 out of 5 is a very poor failure rate - 20% !!