I understand that the formula to work out a 3 phase current is
I= P/(1.732 * V * pf)
I have a 3 PH+N water pump rated at 4kw, so
I= 4000/ (1.732 x 400 x 0.8)
I= 4000/554.24
I= 7.21 Amps per phase
The problem I have is that the label on the pump control says that its rated current is...
dgrande
Thread
3 phase
calculating
control
current
motor
panel
phase
rated
Morning all I've turned up to a job this morning for a bathroom fitter and he's supplying the materials. There's an attic above with insulation and has supplied none fire rated spots. It is a existing I installation and all circuits already rcd protected. Can I legally use these non rated spots...
Hi all,
Does anyone have any experience using these led downlights? They sound pretty good to me on paper.
ELAN-LED COB Reflector Fire Rated Downlights - ELD ? Leading Lighting
I have a shed load of GU10 fire rated downlights to wire in the next couple of weeks. Customer wants brushed chrome and will be fitting retro fit LED 5w bulbs. Which Make/model do you guys find are best for ease and speed of installation
Some of the ones I have used before have been poor...
brizospark
Thread
alarm
downlights
fire
fire rated
gu10
lighting
lights
rated
Went to change a light fitting today for a couple who'd just moved in to their new house. The fitting was rated at 2 x 60w. The lamps actually in the fitting were 2 x 70w.
I'm used to seeing ceiling-mounted fittings with a little heat damage, but this was scary. The timber it was mounted to...
I apologise if this is a stupid question!
What are the benefits of using 12v LED fire rated downlighters, over 230v LED fire rated downlighters?
I assumed that this is more cost effective using 12v as although they are more expensive they last longer and use less power, correct?
Can anyone...
jjrules2
Thread
12v
230v
alarm
downlighters
fire
fire rated
led
rated
using
...what if you had a 100a cutout?!
So for e.g your tails (consumer and dist.) are both 25mm2 and you have a cutout fuse that is 100a - technically the cutout fuse is the only thing protecting from itself to the bottom of your mcbs. Most consumer units have the "built in" cables that are 16mm2...
Eddiesparks
Thread
built
cables
cutout
domestic
question
rated
tails
wiring
just priced a job to do tommorow, it is an outside water feature and it has a transformer plug on the end. only just thought of this on returning home. Had planned a double ip rated socket to connect it too but don't think i would be able to close lid. anyone had this problem before?
thekingiam
Thread
connect
don't
outside
outside socket
problem
rated
socket
transformer
Hi all just a quick one may sound really stupid what is the name of the flexible meter tails inside a distribution board used to link busbar and main switch etc I need to purchase some in 6mm but can only find normal double insulated meter tails and was wondering what this cable is actually called?
brightspark2010
Thread
board
can't
distribution
distribution board
links
rated
solid
tails
Has anyone got any info on this plug/socket make and brand?
I;m just curious as i have not seen them before...
one give away marking is that M type symbol that is on both plug and socket.
Photo Album - Upload the image directly to the thread
thanks for any help
Charles.
My customer, who has a lot of downlights (12v )throughout the house would like them all changing to mains led. I pulled a couple down to check the connection - JB in place so I could cost accordingly. I have noticed that all fittings including ones with habitable room above are not fire rated...
LOL !!!!
https://tradesmen.ratedpeople.com/tradesman/job/1955389.xhtml
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THIS IS THE JOB DESCRIBED
In July 2014 I have the fantastic opportunity to go on a potentially life changing experience with World Challenge. A month long adventure, it includes a trek along the silk...
Hi all
I have recently gone self employed and was thinking of joining up with one of the above. Does any body have any experience with these sites and if so how has it worked out for you with regards to getting jobs?
Has anyone out there subscribed to both and can offer any views and advise on Trust a Trader.
I am registered with Rated People and all the short comings assosioated with them - there are loads of threads on this subject.
I have recently made enquiries recently with Trust a Trader and first...
mamba
Thread
before
first
people
rated
recently
trade
trader
trust
Hi folks new to electricians forums , im self employed in scotland last 18 yrs, things went a bit quiet last couple of weeks as they sometimes do, a joiner colleugue had reccommended i try rated people for work, what a load of rubbish does anyone else have experience of this organization it...
What do people think of these ? Rated people seems to charge £40 +VAT per quarter and then £5 ish for a lead on a £100 job , and 2 other folk will be charged same too, id be interested if anyone found these schemes worthwhile ?
Hi All, Im doing a job for a friend of mine who has a raft of brand new gu10 downlights still in boxes which hes dug out of his loft.
As a member of the Niceic, I have already mentioned that they could do with being fire rated.
12 of them are to be installed in a flat roof with no habitable...
mgnelec09
Thread
alarm
attic
cheap
downlights
fire
fire rated
lighting
lights
rated
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