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An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.: 2 : 622 The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes. In an electrolyte the charge carriers are ions, while in plasma, an ionized gas, they are ions and electrons.The SI unit of electric current is the ampere, or amp, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit: 15 Electric current is measured using a device called an ammeter.: 788 Electric currents create magnetic fields, which are used in motors, generators, inductors, and transformers. In ordinary conductors, they cause Joule heating, which creates light in incandescent light bulbs. Time-varying currents emit electromagnetic waves, which are used in telecommunications to broadcast information.
Good morning!
I've had no heat in my attic bedroom for over 2 years - the rest of the radiators worked fine, but this one was a dead duck.
I watched some YouTube videos, and read through these forums, and decided to have a look at the TRV pin. Lo and behold it was stuck down!
I managed to...
Hi everyone! My name is Robert. I'm currently training at Clyde College in Domestic Gas Foundation.
I'm a time served plumber, and have completed IGAS training in the past.
I'm sure I'll be asking lots of questions int he run up to my ACS exams and beyond!
Thanks in advance
Hi everyone, my combi boiler has been leaking for 8 years. It is a german Vaillant VCW 204
https://www.google.com/search?client=firefox-b-m&biw=1280&bih=672&tbm=isch&sa=1&q=vaillant+vcw+204&oq=vaillant+vcw+204&aqs=mobile-gws-lite..0l5#imgrc=b27-0Ajev_snmM%3A
The thing is, this device is from...
I have viessmann vitodens wb1b 100 boiler and im trying to install a honeywell t5+ wifi thermostat. I currently have a 2 wire thermostat with no c-wire. Can anyone help me with directions and or pictures?
Hi all!
New to all this and currently training to do my ACS for a change of career! (Had to grow up and stop playing with motorbikes)
I found this website while looking for information to write up some method statements but while I'm here, if there are any Gas Safe engineers in or around north...
Hi has anyone completed or currently doing there cma1 gas training? I live down in Bournemouth and am looking at getting my cma1 training done. Any advice would be great?
Hi Guys,
I install between 15 and 30 boilers a year. I've always fitted Worcester's as I trust them implicitly,their technical helpline guys are brilliant, installation is easy and they have been reliable boilers.
However I am aware that they are among the most expensive brands and am looking...
Hi,
I am replacing the screed and pipe in one Conservatory room as the screed was shot and breaking up after ceramic tiles were lifted by my tiler. To be fair the screed must have been a bad mix or dried to rapidly in the conservatory heat.
Currently the whole system (14 loops) use UNIPIPE...
Hi there,
I'm just trying this as a long shot but thought you have to try all avenues. I'm a fully qualified plumber Level 2 through an apprenticeship and have 1 year left on Level 3 but am now looking for an employer as my previous employer had to let me go due to lack of work.
I have been...
I'm doing a garage conversion and need a new radiator in the new room. The most accessible/convenient pipes I have found are 10mm feeding a space saving plinth heater.
I know that the best solution is to tee off the main feed from the boiler as running 2 rads from a 10mm supply could give...
Hi
Im looking for a gas engineer in South Devon/Dartmoor area who would be willing to let me shadow them on jobs and learn from them, Im currently completing my gas foundation course and have a solid background in plumbing and maintainence. I had a mentor but he has recently moved into teaching...
gazza77
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currently
engineer
gas
gas engineer
help
looking
plumbing
portfolio
south
willing
Hi all,
Currently trying to change my bath taps as the mixer tap currently fitted has failed.
I'm going to two separate taps as I have future plans to install a shower unit
I've found what I believe to be the stopcock behind a inspection Hatch under the bathroom sink, I managed to get...
Does anybody know any firms that are taking on apprentices around Stockport/Manchester region. I'm Level 2 qualified and currently half way through my level 3. I have around 14 months remaining. Currently working in commercial properties but trying to get back into domestic so I can get my gas...
Jrplumb
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apprentice
around
currently
domestic
level
looking
Sorry in advance for the long thread! Just want to make sure i provided as much detail as possible.
We are currently building an extension and whilst devastating the house have decided to install a new boiler, we have also opted for a John Guest UFH system to be installed in the new...
Chrismw1989
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boiler
central heating system
currently
motorised
motorised valves
oil
someone
thermostat
thermostats
valiant
valves
wiring
Hi, my names Steve i'm 32 I completed my level 2 6035 with flying colours last year and I am having a knightmare trying to get a start with anyone. I have experience in maintenance and I have fitted toilets and wash basins and also radiators and copper and waste pipe work, I have my own tools...
SteveO32
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anyone
currently
needed
please
plumbers
plumbers mate
work
Hi,
I am upgrading a house (wooden frame, wooden clad, brick base - old forestry style).
The plumbing and heating needs replaced (currently electric emersion and open fire back boiler).
The pipe work that is in is 8mm external diameter.
I know the current trend is to increase the...
Good morning
I currently have an ideal Icos HE15 and I currently don't have heating or hot water.
if I had the boiler off and then turned it back on again. I get the start up, then the number 1 comes up on the panel. Then everything clicks off and I get a constant zero and no burner...
Hi there, I'm new to this forum, anyway I was just wanting to find out if there are fully qualified plumbers in Leeds who could possibly employ me until I'm fully qualified as I want to get to Level 3 and be gas safe, I am currently on Level 1 and I started in September. I would really...
Leebrah
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apprentice
currently
looking
qualified
really
reply
Hi,
I'm hoping someone might be able to help me. My boiler is currently not working, my gas is connected (gas cooker works) and I have power, and the power is getting at least to the controls (Danfoss TP9000). However the display is just flashing, if i push a button (any button) it will beep...
big_cat_sammy
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boiler
central heating system
controls
currently
danfoss
hot
hot water
no heating
not working
oil
water
working
Good evening - we are a small plumbing and heating firm covering the West Kent area - Tonbridge, Tunbridge Wells and Sevenoaks. We install bathrooms, install and repair gas appliances, and cover all maintenance and emergency callouts. We are currently five people strong but are expanding all the...
RLP
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currently
engineer
essential
experience
gas
gas engineer
heating
install
looking
please
required
skills
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