two radials on 16 a mcb

[DuaneMHunt1976]

Also said on the last report these radials where rings
So on the last report on the system they would of had the r1 r2 rn
As far as I can read these rings have been broken and places on 16A breaker
So what was once two rings have become four radials over two circuits

 

[telectrix]

to clarify. each 16A MCB has 1 radial circuit consisting of 2 branches. ​

 

[Octopus]

to clarify. each 16A MCB has 1 radial circuit consisting of 2 branches. ​

So OP:

Step 1 - locate the sockets / outlets on "both" branches.

Step 2 - I & T each branch

Step 3 - record the higher readings however if, for example 1 leg is short and has low IR and the other is long and has good IR I would be inclined to record both sets of readings on the schedule of inspections..... and add a note in the inspection comments section.

 

[Paul.M]

What is the possibility of finding the ends of these two radials and making them back into two RFC's?

 

[polo1]

So OP:

Step 1 - locate the sockets / outlets on "both" branches.

Step 2 - I & T each branch

Step 3 - record the higher readings however if, for example 1 leg is short and has low IR and the other is long and has good IR I would be inclined to record both sets of readings on the schedule of inspections..... and add a note in the inspection comments section.

At last, a straightforward answer to (an initially befuddled) question.
Truth is, I've come across many electricians who don't know exactly how best to test & record such a scenario, so let's not be too hard on the OP. And yes, electricians mixing up their r1 & R1 etc, gets me too!

 

[telectrix]

At last, a straightforward answer to (an initially befuddled) question.
Truth is, I've come across many electricians who don't know exactly how best to test & record such a scenario, so let's not be too hard on the OP. And yes, electricians mixing up their r1 & R1 etc, gets me too!

some guys just don't know their arse (r's ) from their elbows.

 

[Paul.M]

some guys just don't know their arse (r's ) from their elbows.

:frown2::frown2::frown2:

 

[telectrix]

:frown2::frown2::frown2:

you been on that peroxide again?

 

[Paul.M]

Thread going way off track now so I've edited a couple of posts and made it into a new thread. http://www.electriciansforums.co.uk/chit-chat-off-topic/110111-arse-elbow.html

Lets see how many of us know our arse from our elbow? (we are all grown ups and this is just a bit of banter taken away from this thread).

 

[Paul.M]

Trying to get this thread back on topic:- You can not have have 2 circuits from the same OCPD. You can have one radial socket circuit with a spur from the MCB if feeding only one point!

Discuss?

 

[telectrix]

Trying to get this thread back on topic:- You can not have have 2 circuits from the same OCPD. You can have one radial socket circuit with a spur from the MCB if feeding only one point!

Discuss?

no, you can have unlimited branches. it's only that you can have 1 unfused outlet from a RFC, tapped off at theOCPD.

 

[Paul.M]

no, you can have unlimited branches. it's only that you can have 1 unfused outlet from a RFC, tapped off at theOCPD.

Branching off a radial is fine from a socket. Branching from a MCB?...... I was thinking along the lines of separation of circuits but at the end of the day, if it was a RFC in the first place it would serve the same floor/area so no difference really.

 

[telectrix]

welcome to my world.


https://www.youtube.com/watch?v=QHmH1xQ2Pf4

 

[Andy78]

no, you can have unlimited branches. it's only that you can have 1 unfused outlet from a RFC, tapped off at theOCPD.

But remove the RFC leaving the 2.5mm radial with one double outlet on the 32A MCB and it suddenly becomes dangerous and against the regs, much in the same way that an insulated consumer unit will inevitably catch on fire now it's not to regulations.

 

[Deleted member 26818]

Just measure Zs at each socket on the circuits, and record the highest value for each circuit.
I wouldn't bother with measuring R1 or R2.