Trying to calculate the voltage drop for a run on external lights supplied via 5Amp Fused/rcd spur from local ring final circuit. for a quotation and have got a bit confused re Voltage drop.
27m run in 1.5mm cable total load on lighting radial 420w. (no diversity as all lights either on or...
Hey guys, I had a callout the other day, 7 fan coil units where not working, these where supplied via a ring final circuit and once all unplugged the circuit engaged, I latter discovered all fan coil units had a dead link between line and earth under a 250v insulation test. The manager and...
Chrisday1990
Thread
another
circuit
final
motors
previous
ring
ring final
through
units
You have been asked to carry out a full test on a ring final circuit. It is wired in 2.5mm single core cables. (I have made the test result values up to make things easier to work out).
You have confirmed that the ring is continuous, and your r1 value is 0.5 ohm, your rn is 0.5 ohm and your r2...
SirKit Breaker
Thread
answer
circuit
final
please
ring
ring final
testing
trainee
trainees
wrong
On an EIC, be it with whoeverm but using a standard one, or that of niceic online, how or here would I write the details of a control circuit from a time switch to Contactor etc? Or dont you bother?
Here's the scenario:
Ring Final Circuit
Design Current = 20 Amps
Circuit Breaker = 32 Amps (may well be using an RCBO - but that's another story)
Ring length total (end to end) < 45 meters
Correction Factors - grouping factor of 0.78 (reference method E with 9 other circuits)
Gives an Iz of...
R1CH-G
Thread
cable
can't
circuit
electrical work
final
length
works
If in your years of experience you could pass one bit of advise to a final year apprentice about to qualify what would it be and why?
Is there anything you wish someone a little older and wiser had told you before you finished your time?
I will be installing a new Ring main for a kitchen install and have come across a cut-out that is totally new to me.
Has anyone seen one of these..and how do I record its details on my Certificate.
Hi peeps
I have continuity measurements on a ring final circuit of: L/L 1.4, N/N 0.78, E/E 1.7
Loose connections somewhere?
There is a new CU with RCD.
Insulation resistance measurements are good.
There is a boiler added into the circuit as a spur.
Any suggestions or comments?
THANKS!!
:) :) :)
Hi need some advice, changed a db today everything was fine until testing ring final,there was no continuity on r1 r2 rn so no ring now but the 1 leg is supplying power to all the sockets in the house so basically a radial, it was on a 30 amp old fuse so changed to a 20 amp mcb did a i/r test...
Good Evening all,
Been at a property today starting intial tests for a board change tommorow. There are two ring circuits, on one of the ring circuits i had an open circuit on the cpc. Live and neutral where fine 0.4/0.4. I started to locate the break by splitting the legs and joining the live...
We have received many enquiries about the final registration date for the NVQ 3 Electrical Installation and can confirm that the final registration date is 31st December 2013 with the final certification date being December 2016.
We are now offering people the opportunity to secure their...
My friends downstairs sockets are tripping the RCD. First thing I did is unplug everything on the circuit, switched on the MCB and the RCD tripped. Tested continuity of L-L N-N CPC-CPC between the legs. CPC has no continuity whatsoever. Could anyone advise me what would be my next step to...
ive been having a dispute with another electrician about using 30A JB's on rings
a ring is made up of 2 legs of 2.5mm T+E,
2.5mm T+E ref method C has current carrying capacity of 27A
now surely the JB has to be rated higher than the cable, but using a 30A jb although this is less than the 32A...
SplitJugular
Thread
30a
32a
cable
circuit
circuits
final
right
ring
ring final
under
Which code would be considered appropriate for a ring circuit protected by a 30A rewireable fuse wired in 4 core 1.5mm2 MICC cable installed to method C. Circuit consists of 12 double sockets serving a large chapel area in a church dating to approx 60 years. I have put a code 2 for...
rattlehead85
Thread
1.5
4 core
circuit
code
core
eicr
eicr code
final
micc
ring
ring final
I need some advice regarding the final connection of the tails for a new dedicated consumer unit for a new shower. There are connecting blocks between the meter and existing consumer unit with spare ways but without pulling the service fuse I can't connect up without working live.
Is this a job...
horacecambold
Thread
blocks
connection
doing
don't
final
shower
without
you're
Congratulations to the England ODI cricket side on making it look easy today. Not exactly the game I was hoping for with my fellow countrymen being 80 for eight wickets at one point....but hey, there's always a next time.
Good luck for the finals.
I've been asked to install a new RFC at a Ground Floor Flat. The Socket outlets for this circuit are going to be in a room at the rear of the property on the other side of the flat from the CU - the owner does not want me to install the cable through the Flat, but wants me to route the cable...
freedomrun
Thread
cable
clipped
direct
final
outside
ring
ring final
wall
If I add a rcd to a ring final at the fuse board because im adding extra sockets and moving some other I need to test all old sockets as well right ?? the reason I ask is ive quoted for the job and was discussing with the customer yesterday what I had to do, I saw her tonight at the pub and she...
Jimmyb
Thread
adding
circuit
exactly
final
protection
rcd
ring
ring final
sockets
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