Watched the NICEIC's periodic inspection reporting dvd the other night, good overall and helpful but one thing I just cant agree with.
I'm sure Tony Cable is a good electrician but when it came to the section on Maximum Demand he measured it with a clampmeter around the Line Tail and shouted "...
When doing pirs and pirs before consumer unit changes or db,s when calculating the max demand with help from OSG i often find installations max demand well exceeds the cut out fuse. customers dont care what do yous guys do about it
hi guys
with my yearly inspection comming up i have a job where ive installed a cooker circuit.
15 way cpn split c/u is the existing db in the house (small three bed only).
it has 6 ring circuits 2 radials and 6 lighting circuits. (because it was 2 flats previously)
my question is...
Hi there doin project and stuck on one of the questions help would be appreciated. For maximum demand applying diversity for this Twelve 0.5kw 3 phase induction motors for car ramps each having a power factor of 0.8. efficiency 95%
Just wondering how people are finding the supply / demand for PV at the moment.
We're just being ground down by a potential customer who's managed to set two or three installers against each other by going back to each in turn saying 'such-and-such-a-company are doing it cheaper'. He even said...
When calculating the maximum demand say for a 3 bedroom house if you cannot use diversity for a 9.5 KW shower how can you keep the total with all other circuits to under 100 Amps? Am I misunderstanding something?
Hey guys. Just wondering why it's necessary to calculate maximum demand of the installation when filling out electrical installation certificates when installing a PV system? Because your inverter isn't really an additional load on the supply because it's feeding power in?
Thanks
hi,
Ive recently fitted a new CU to my house ready for assesment (Elecsa 14th dec).
Just wanted to know if I had worked out MD + D correctly cheers.
Hi integrity dual RCD board. LAYOUT AS FOLLOWS.
100A MAIN INCOMER
6A RCBO SMOKE ALARM MINUS 40% = 2.4A
6A RCBO SECURITY...
hi,i have completed a consumer change but feel that the total demand as calculated is greater than supplier fuse (60AMP).the property has had numerous extentions.what would you put on eic and would you make a note of concerns in existing installation and recomend upgrade, any comments...
hi all
i am in the process of wiring a 1 bed annex at the bottom of a chaps garden
the house was on a 63amp supply and its been upgraded to 100a
the loadings in the annex are
6kw electric boiler
8 kw shower (the shower is to be fed through a contactor which takes priority over the boiler so...
Hi all, a little help please.........I have a job where a building is being converted into 16 flats so sse have been to site and we have decided that it needs a 95 mm wavecon supply with 2 ryfield blocks for 17 new supplies. Now they have asked for a maximum demand for the flats which are all 2...
in determining Maximum Demand and Diversity may be applied, which is
a. Taking the sum of protective devices from any CCU
b. Taking into account that not all loads will be switched on at the same time
c. Taking into account that all loads doubtless will be engaged simultaneously
d. Ensuring...
could any one tell me what rules they follow when filling in the max demand box on the EIC , do you work it out then add diversity ( time consuming ) or switch on as much as possible and use clamp meter ? a spark told me recently he enters the rating of the service fuse , another once told use...
Hi guys,
I don’t want to be the prophet of doom but I stumbled across a piece of info I feel I really should share with you (some of you probably know this already)
Ok, here it is from the NAPIT website;
BIG SURGE IN STUDENTS ON TRAINING COURSES TO BE ELECTRICIANS
In the last year, the...
hi guys new here.
installing a 3 ph genny set on a remote farm.bells and whistles set.
purchase from recivers so no history. but a very good set in a1 nick.
got it working. its got plc control .sussed that out with help from DEEP SEA ELECTRONICS.
what i am looking for is a unit that will kick in...
hello there everyone just got a quick question in regards to a new installation i am doing at the moment it is a manor house 20m in length.
i was wondering whats the best way to go about it i would like to put a domestic board on each of the 3 floors and one in the basement is it best to...
Hi all can anyone help me get my max D calculations down to under a 100a not sure if ive compltely got the wrong end of the stick with the maths any ideas would be greatley welcomed. Ive attached jpeg below, please double click on image to view.
Guys did a consumer unit change over the weekend and hit 2 snags
1. The suppliers cut out fuse has no markings on it ie no BS 88 60 amp instead the unit is black with no markings on it so how to I id it for the cert. The property is a 3 bedroom 1950s flat TNS supply.
2. Maximum demand I...
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