Basic Electrical Formulas????

[WMapprentice]

Can anyone leave me some basic electrical formulas that i should know as a year 1 apprentice and explain them?

thanks

 

[RyanCheetham]

Ohms law is worth committing to memory, the triangle will help you every time

 

[johnboy6083]

The most important is ohms law. V=IR or I= V/R or R=V/I
there are other versions of it, where the R is called different things according to the application but the theory is the same.

 

[tbs1983]

I = V / R (ohm's law)

current (I) is equal to Voltage (V) over Resistance (R)

P = V x I

Power (P) is equal to Voltage times Current.

Units of measurement:

Voltage = Volts (V)
Current = Amps (I)
Resistance = Ohms (R)
Power = Watts (P)

 

[WMapprentice]

The most important is ohms law. V=IR or I= V/R or R=V/I
there are other versions of it, where the R is called different things according to the application but the theory is the same.

this may sound really stupid, but how do you work out how many amps is allowed on one cable? i dont understand how you work out the amount of amps allowed on a certain size cable

 

[Resu]

Hey bud, you should join the apprentice/trainee section. Here's where you join:

http://www.electriciansforums.net/apply-gain-access-trainee-only-forum/

Start a new thread and use this template:

Your Details
Your Full Name:
Your Address:
Your Telephone Number:


Training Details
Training Providers Name:
Training Providers Address:
Course(s) you are taking with the Provider:
Date the Courses/Training Started:
Date the Courses/Training Should Be Completed:
Qualification(s) Gained Once Completed:

 

[Knobhead]

 

[Resu]

this may sound really stupid, but how do you work out how many amps is allowed on one cable? i dont understand how you work out the amount of amps allowed on a certain size cable

If you just need to know quickly you'll find the current carrying capacities for the basic sizes of T&E in your OSG.

 

[WMapprentice]

Hey bud, you should join the apprentice/trainee section. Here's where you join:

http://www.electriciansforums.net/apply-gain-access-trainee-only-forum/

Start a new thread and use this template:

Your Details
Your Full Name:
Your Address:
Your Telephone Number:


Training Details
Training Providers Name:
Training Providers Address:
Course(s) you are taking with the Provider:
Date the Courses/Training Started:
Date the Courses/Training Should Be Completed:
Qualification(s) Gained Once Completed:

thanks ill have a look now mate

- - - Updated - - -

New phone screensaver maybe? haha

 

[Knobhead]

Whatever you do to save it is up to you. Screensaver, not a bad idea.

Until I clout you around the back of your tabs for having you're phone out at work :49:

 

[telectrix]

he can always study the wheel at break time.

 

[WMapprentice]

Whatever you do to save it is up to you. Screensaver, not a bad idea.

Until I clout you around the back of your tabs for having you're phone out at work :49:

can't help having my phone out all the time

 

[monkeyelectric]

Can anyone leave me some basic electrical formulas that i should know as a year 1 apprentice and explain them?

thanks

The most important one is T=happy sparkys
so get that kettle on!

 

[telectrix]

and just to be pedantic, it's formulae, not formulas. didn't they teach you latin at school? :ack2:

 

[trev]

can't help having my phone out all the time

Yes You Can!! Put it away and get some work done you lazy ..............

 

[telectrix]

he can't hear you trev. he's too busy with his ipad with earphones on.

 

[WMapprentice]

Yes You Can!! Put it away and get some work done you lazy ..............

have you seen your signature?

 

[telectrix]

i hope so, he bloody well put it there.

 

[WMapprentice]

he can't hear you trev. he's too busy with his ipad with earphones on.

hahaha

- - - Updated - - -

i hope so, he bloody well put it there.

leave it out old man

 

[telectrix]

you'll be OK on site, you lippy sod. :rockon:

 

[onions1066]

have you seen your signature?

The best noise from an apprentice is no noise, remember that and you'll be fine

 

[trev]

have you seen your signature?

It's called irony young un. I'd bet I can still out pace you

 

[telectrix]

noise from apprentices is only allowed when they smash their hand with a lump hammer. and that is only if we have a video recorder of some sort handy.

 

[onions1066]

Wmapprentice I HAD an apprentice like you ONCE. Little bit lippy. Concentrate on the two words in capitals . Lol. Good luck

 

[trev]

I like em with a little bit of lip Onions, it shows they've got something about them. Not too much lip mind you or they risk getting a fat one

 

[telectrix]

he can be as lippy as he likes to plumbers. remember, we can electrocute them. they can only get us wet.

 

[WMapprentice]

he can be as lippy as he likes to plumbers. remember, we can electrocute them. they can only get us wet.

haha and throw pipe that they've bent

 

[onions1066]

I think the job that bit me in the --- was when I had two apprentices and the builder had 2 apprentices all similar age, they were all fighting to be top dog. I was a broke man by the end. I do admit a bit of lip is alright but too much is just annoying. Very fine line. Whilst I'm on it what I find worse is when you have one who thinks they know everything! Left one last week who is about to come out his time to connect a 24v door closer up but in his wisdom connected it to an old 230v spur next to it and wondered why the doors were smoking!

 

[telectrix]

haha and throw pipe that they've bent

but we can throw galv. conduit back. comes a lot keener round the earhole than that flimsy copper rubbish. anyway most of 'em use plastic pipe now. there's a good reason for that. copper comes in 3m lengths, plastic comes in 25m. far more material for them to bugger up.