U
undertrained
Err, no I don't. I am qualified in gas and have my essential electrics qualification.
The power supply to any gas heating system requires a 3Amp fuse and all wiring should be minimum 0.75mm2 , all controls must be taken from this single source as well as the appliance, this is to have only one point of isolation, so you dont get alovely surprise when you isolate at the fused spur then find out some idiot has put something on the circuit connected to an external plug.
As you state, you are in full time employment, so what does a 'greater understanding' offer you? Knowing how to do more electrics does not give you any further outlets without more registration and the attendant expenses.
I have worked in oil heating and resisted the overtures to include gas work. There are only so many hours in the day, and if you are fully employed, why incur all the extra costs for no more reward?
I have worked in oil heating and resisted the overtures to include gas work. There are only so many hours in the day, and if you are fully employed, why incur all the extra costs for no more reward?
U
undertrained
Thanks to all who have provided a decent reply. Ian has provided me with the answers I was looking for.
Well, for me, it's a matter of personal growth and wishing to learn something new every day, about subjects in which I am interested.
I presume you mean Fused Connection Units. The cable is the fused spur although a lot of people, including suppliers, make the mistake.
https://www.diynot.com/wiki/Electrics:walls
The cable which can carry the required current.
Fused Connection Units have a maximum 13A fuse so 1mm² (or larger) T&E or flex will suffice.
Ones for a boiler will have a 3A fuse so virtually any cable will be satisfactory.
If installed in thermal insulation a larger cable might be required so don't install it in thermal insulation.
Common sense.
Fire resistant clips are now required if it could fall in a fire.
As many as will fit in the terminals, I suppose, but because of the fuse limitation more than one, maybe two, is unlikely to be required.
Well, they will be wired from their control points (or perhaps via a wiring centre) so the question does not arise.
Ohms law is important but I don't know if it is relevant to anything you have asked.
3kW @ 240V immersion should be P/V=I (P is power {Watts}, I is current {amps}) 3000W/240V=12.5A but
that is because the element has a resistance of 19.2Ω which is the only constant value so at 230V it will be V²/R=P; 2760W and 12A.
Calculator https://www.tlc-direct.co.uk/Technical/Charts/OhmsLawCalculator.html
Lots - search for electrics for beginners. Make sure it is British.
A good author -
https://www.amazon.co.uk/Electrical-Installation-Work-Brian-Scaddan/dp/008096981X
Yes, it is more or less the same and will contain the Current Carrying Capacities of cables, Installation Methods etc. plus a lot of rules.
Last edited:
A copy of the Regs makes for some very dry reading for the best of us, hardly suitable for an absolute beginner. Better if he concentrates on basic circuits and how they work, before progressing onto the Regs. He can always then refer back to the Regs if he needs to, or ask on here. I remember studying them whilst at college and committing them to memory, including many of the more useful tables.
D
durhamplumber
Might have been good idea to learn first
@undertrained ,dont let all the negative comments put you off asking for advice, we all had to learn sometime and asking for advice is the best way to get it, wish I had been like some on here that just woke up knowing everything
D
durhamplumber
Apprecentiship sonnyjim..or training courses.
People willing ( and able ) to learn wake up each day knowing a bit more than they did when they woke up the previous day.
D
durhamplumber
Everyday is a school day!
you might have been lucky enough, to get an apprenticeship and train at others expense , unfortunately not everyone has that luxury these days and someone trying to better him or her self by asking for help should be supported, not ridiculed by self important idiots like you, glad you got everything handed to you on a plate and to be honest reading some of your comments you were not paying attention , you know feck all
D
durhamplumber
No...had a job at the time
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
