Rules and Guidelines

Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

Locked Locked
Replies 10 replies
Subscribers 38 subscribers
Views 1308 views
Users 0 members are here

Options

You may also be interested in

This discussion is locked.

You cannot post a reply to this discussion. If you have a question start a new discussion

Commercial 400v supply quality

Philip Conlan over 2 years ago

I recently came across this DNO cutout and wanted to get other opinions on its current state.

I'm trying to get a better understanding of what is "good practice" when it comes to commercial and industrial installations.

For me I notice...

- the main cutout is positioned upside down.

- the extra cable entering the top connecting a single phase, with the exposed earthing conductor connecting to the MET.

Is this acceptable and also is there anything else that that would require attention?

Parents

mapj1 over 2 years ago

where does that un metered single phase go to - it is on the wrong side of the main fuses.... Normally 3 phase cut outs are not designed to allow a loop through to another cut out. That is more common on 1 phase terraced houses, and even there it is now deprecated.

It does not look dangerous, it is scruffy and it may have been 'touched' since installation, and not quite what the DNO remember...

If that is whole current metering then I'd expect 100Aphase or less, so it is small.

Mike
Cancel
Vote Up 0 Vote Down

Cancel
Philip Conlan over 2 years ago in reply to mapj1

So the single phase does go to another 100A cutout then meter. I'm sure this was a later edition.

Thanks for the response.
Cancel
Vote Up 0 Vote Down

Cancel

Reply

Philip Conlan over 2 years ago in reply to mapj1

So the single phase does go to another 100A cutout then meter. I'm sure this was a later edition.

Thanks for the response.
Cancel
Vote Up 0 Vote Down

Cancel

Children

No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.