Been out of the loop for a bit, am I right in assuming that batteries for a domestic self consumption situation are 5%?
Also for off grid systems?
Cheers
E
I have a project in a hotel that has a DALI control system
We are supplying LED downlights that are dimmable on the DALI protocol but they also want other lighting ground lights and wall lights that do not need to be dimmed.
Question is will they still work on the standard LED drivers or do...
Has anyone done the JIB MCAS (mature candidate assessment scheme) ?
I have been in the electrical trade a good few years and wanted to finish off my training so I can get JIB'd. Been sent the knowledge unit from my training provider and hardly any of it is actually electrical related more H&S...
Why are standard single pole RCBO's not advised for a TT system? Sure I've seen this somewhere....something to do with not disconnecting the N with a N-E fault potentially allowing a fault current to continue to divert to earth from the neutral.. But then a SP RCBO, or MCB on a TN system would...
Hi, I'm being assessed for fault finding as part of my NVQ tomorrow and have just had a bit of a 'what the hell am I'm doing' moment!
I'm building the fault in. It will be a loose neutral touching an earthed metal back box in a socket on a ring main, causing the RCD to trip.
My plan of attack...
Hello all,
Went to look at a job this week at a 1960s property. When the house was originally built electric heating elements were installed within the screed and have been operating happily on economy 7 ever since and client is happy with it. Just wondering if anyone knows of this still being...
Hi All
reading the guide it mentions performance of different panels & how they react, Maybe with all the guidelines & standards we have to adopt they should have had more stringent standards on the panels in the first place & then they would not need the requirement.
Evidence has emerged...
Leeds Solar have just become aware that on 10th March DECC slipped in a Statutory Instrument that takes effect today (31st March 2016) that results in the following urgent issue.
All existing renewable energy installations with an MCS certificate issued before 15th January 2016 must submit...
Hi quick question I have to change a consumer unit out. It is a TT supply system. All breakers will be 61009. I have spoken to my part P tech department and they say that I still need a 100A 100mA S type main switch up front. Another guy says NO as the breakers are all 30mA controls. The first...
I need to put an alarm in my house and can't really be arsed to install a hard wired one. I have have two cats so need a pet sensitive one.
Does anybody have any recommendations?
If push comes to shove then I will put in a hard wired one if someone knows of one that's really good.
All help...
This has been rumbling on for several months. DECC finally announced a consultation yesterday which can be found here:
https://www.gov.uk/government/consultations/the-renewable-heat-incentive-a-reformed-and-refocused-scheme
Biomass will also take a hit. The strategic thinking behind this is...
Morning all,
Came across an interesting one yesterday. On a farm, two P1 27.6kw inverters with identical arrays that used to have the same output, since nov2015 one is running about 20% down as i witnessed.
Immediate assumption was that a string was down but string voltages tested out fine, 6...
ive been desperate to leave the UK for a while now, I felt at home on my holiday to Amsterdam, loved the people and the electrical systems from what ive seen seem quite similar.
Does anybody have relevant experience of moving and working there?
Im primarily fire\security\life safety systems but...
I am currently studying my Level 3 electrical Installation Building and Structures unit 305 Electrical Systems Design and I have been told this is a open book so I can pick the brains of anyone who understands this I have come across a question which is :
select with the aid of manufactures...
Hi all,
Up until now I have mainly been dealing with bog standard Y and S plan heating systems with single pumps albeit sometimes adding smart control systems etc but in the last week I have come across a couple of installations where there are multiple valves and pumps in the system and I am...
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