So how about this metering setup anyone? I have never come across this setup before, and I wonder whether the client would be better off keeping it rather than persisting with his attempts to get a smart meter fitted because he's keen to monitor and reduce his bills.... that is I wonder how accurate this indirect metering actually is. I am going to suggest to him he does a simple test by running a known load and for a period and seeing what the meter records. He's had 4 appointments for a replacement meter cancelled in the past two years without anyone ever coming to visit, citing that his installation is not suitable for a smart meter.
Note the TNC earth arrangment, the exposed single insulation on the boot termination of the concentric lead in. The question I'm wondering is how the off peak metering could possibly be distinquested between the two separate tails that go through what I assume is a toroid. Surely this setup means all power consumption is metered either on the Low or Normal meter. The meter tails are have no fuse switch and the boards are over 8 metres away inside the building. I think I'll pass on any idea of removing the cutout fuse to work on this one.
Was this some DNO engineers experiment or was this a regular setup at some period in the distant past? Would be very interested to hear from the forum to share some information and knowledge about this setup.
Surprising what you find in these old farms and buildings in rural Cornwall.
![[ElectriciansForums.net] This one's new to me... Your thoughts please gentlemen.](https://www.electriciansforums.net/attachments/boxoftricks-jpg.97675/ "[ElectriciansForums.net] This one's new to me... Your thoughts please gentlemen.")
Note the TNC earth arrangment, the exposed single insulation on the boot termination of the concentric lead in. The question I'm wondering is how the off peak metering could possibly be distinquested between the two separate tails that go through what I assume is a toroid. Surely this setup means all power consumption is metered either on the Low or Normal meter. The meter tails are have no fuse switch and the boards are over 8 metres away inside the building. I think I'll pass on any idea of removing the cutout fuse to work on this one.
Was this some DNO engineers experiment or was this a regular setup at some period in the distant past? Would be very interested to hear from the forum to share some information and knowledge about this setup.
Surprising what you find in these old farms and buildings in rural Cornwall.
![[ElectriciansForums.net] This one's new to me... Your thoughts please gentlemen.](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/65/65639-e0b7e3ed5d9280632255147b1b0d97cc.jpg)
