Hi all, could someone please give me some advice. I wiring some flats up and as its an old building their is currently no power to any floors. New supplies are being fitted in the basement (which is owned by a shop on the bottom floor) my question is about protecting the tails up to each flats...
Hi Guys,
A Metalcad CU is being installed on a TT system in a farm garage. Chances arew things will be rested up against the walls so a Metalclad CU has been chosen to give it protection.
All circuits will be protected by 30mA RCD / RCBO.
From research it seems a 100mA time delayed RCD will be...
Hi Guys.
I have a new build house waiting for the meter to be fitted by the NIE. What are the requirements for isolation in the outside metering cubicle on a tt system. Would a 100a isolator be ok or do I need an RCD here as well as the 2 x 30mA ones in the con unit.
Con Unit is back to back...
Hello all
I have a standard CU at present with 30mA RCD protection. As there was no decent earth in place, I'm in the process of installing TT and, so far, I've installed an Earth Rod, tested and found sufficiently low loop impedance. My next job is to get the necessary RCD protection in...
1st floor flat on PME supply. Service head on lower floor below G/F flat. Tails to 1/F flat some 10m away protected by switched fuse after meter. Cant see run of tails but 99.99% sure they are buried in the wall as no conduit/trunking evident and they also go through the communal staircase area...
Hello
Just not on the job at the moment but the builder called. He plugged his small angle grinder in to a new circuit and it took out the RCD at the supplying DB not the 30mA at local CU.
Here's the set up:
TT . 100A DNO fuse
House CU old and full so split tails into small CU with...
I have wired up a couple of remote switches for a three phase fan in a paint room, two switches by the door, one inside the room one outside, this so fan can be controlled when entering and leaving the room, i have wired these as a closed loop hold on circuit with momentary switches, my problem...
Hadn't received my payment cheque so rang SSE to see if it was in hand. Was told Na! They have changed their payment dates because their computers couldn't handle the FIT change to 45p. Got to submit new reading by 5th June to get paid a month later.
Would have been nice to have been told. I...
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I have been to a job this morning, the outside carpark lights had a fault on them, i have rectified the fault. The system is TT with 100ma rcd incomer protecting the installation.
The problem is that if there is a fault on the lighting circuit throughout the night it takes the main 100ma rcd...
had a customer enquirey to change card meters in some flats each flat is fed with 10mm twin and earth and each flat has its own earth stake on fuse fusebox side of flat,each flat has a 30ma rcd inbetween incoming supply cable and fusebox. however there is no earth stake for the incoming supplies...
2 are in the board and the other is feeding that which is also being fed from a 100 amp rcd. cant seem to find any problems with cables and does just nuisance trip.
help plz
It has just been confirmed that the current method for registering domestic installers will continue until April 2013. This provides more time for anyone looking to qualify under the current scheme to get trained in confidence that they will be able to progress their career following the...
Just had an envelope come in the post from a regional (I think) firm advertising solar - and all it mentions is that "the government are expected to reduce the Feed in Tariffs by up to 20% in April 2012".
I can only assume that it was a bulk mail campaign that got posted before the DECC...
Hi, can anybody throw some light on a problem / confusion i have?
I'm in the process of installing a new TT system.
The existing earth electrode had a high resistance in excess of 2Mohms. I've inserted a new electrode in a new location and measured the resistance immediately after inserting the...
hi, i am connecting a time delay relay onto a lighting circuit. i am going to have a switch on the circuit, when you switch the light on it should go on and stay on, until the switch is switched off again. when the switch is switched off, i want the light to stay on for ten minutes then go off...
just been to a quote for new bathroom refurb , new board done, hi integrity crabtree starbreaker CU in place.
TT system
split rcd with 2 ways etc. 30 MA on each, all tested ok.
no time delayed main switch, just standard 100A main switch.
Does this require one as it is split load?
the install...
Hi al,l I am working on a tt system at present. I am going to be a adding a new d/b which will be ran from an existing board which has a 30ma main switch, controlling 1 other circuit i need to change the main switch to 100ma and the 1 circuit its controlling will need changing to a 30ma rcbo as...
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