Help please

[lee sandland]

Hi all,
i am doing a domestic electrical installer eal level 2 course with olci and came across a question "if i had to wire a immersion heater 10meters away from the cu would i use 11 meters of cable and would i use the same cable size for a 8kw shower

 

[lee sandland]

its actually a stupid question to ask, and if thats the best the di can come up with then they all should be shut down

WHYS THAT???

 

[Jason Smith]

Lee, dont worry mate, you will find that the question you were asked is a basic one, you will look back in years to come and find that it s actually the equivalent of milk +hot water + nescafe = coffee.There is not one person on here who did not have to learn exactly what you are doing now. As you may, they all went onto higher things, people have forgotten they had to learn the basics too. I would say if that question was asked on your course, then its a good course !! keep asking mate, no one will fail you on here, and you will find that comment was not directed at you.

Right mate start with the load. Thats eight kilo watts. What size cable do we need to supply that - page 274 of BS 7671 will tell you. How is the cable run ? in insulation ? through a boiler house- look up the terms "reference methods," you may need to increase cable sizes to allow for the reference methods. Voltage drop- as a cable gets longer, the voltage drops ! simple in it ! find the bit in the books that tell you all about that. Regulations- showers on own circuits please, in bathrooms must be rcd protected, etc- osg will tell you that. Breaker size- wanna be a bit less than the current carrying capacity of the cable, its called failing to safety !
So if anyone says that was a simple question you were asked, yuo can now sit in class tomorrow and be way above all the others and throw some what ifs at your trainers . !! And if anyone wants to know, by the time you have finished your eal course, you will be able to write replies like this, or you will not pass simple. They all seem to think its a breeze, but its not. keep me updated.

 

[lee sandland]

lee, dont worry mate, you will find that the question you were asked is a basic one, you will look back in years to come and find that it s actually the equivalent of milk +hot water + nescafe = coffee.there is not one person on here who did not have to learn exactly what you are doing now. As you may, they all went onto higher things, people have forgotten they had to learn the basics too. I would say if that question was asked on your course, then its a good course !! Keep asking mate, no one will fail you on here, and you will find that comment was not directed at you.

Right mate start with the load. Thats eight kilo watts. What size cable do we need to supply that - page 274 of bs 7671 will tell you. How is the cable run ? In insulation ? Through a boiler house- look up the terms "reference methods," you may need to increase cable sizes to allow for the reference methods. Voltage drop- as a cable gets longer, the voltage drops ! Simple in it ! Find the bit in the books that tell you all about that. Regulations- showers on own circuits please, in bathrooms must be rcd protected, etc- osg will tell you that. Breaker size- wanna be a bit less than the current carrying capacity of the cable, its called failing to safety !
So if anyone says that was a simple question you were asked, yuo can now sit in class tomorrow and be way above all the others and throw some what ifs at your trainers . !! And if anyone wants to know, by the time you have finished your eal course, you will be able to write replies like this, or you will not pass simple. They all seem to think its a breeze, but its not. Keep me updated.

cheers jason thanks for that

 

[GT1]

Top reply Jason...

I was having a conversation along those lines with a client the other day, whereby a recently installed kitchen radial wired in 2.5 had melted.
The cable was too small for the load/instaltion method and the mcb rated incorrectly.
No paperwork issued by installer
No offer by them to put right the work either..!!

I havent got years of experience, but a few quick sums and a look at the tables soon proved the job was a hit and run..! no thought put into it, bish bash bosh, wheres me money guv..

 

[lee sandland]

Top reply Jason...

I was having a conversation along those lines with a client the other day, whereby a recently installed kitchen radial wired in 2.5 had melted.
The cable was too small for the load/instaltion method and the mcb rated incorrectly.
No paperwork issued by installer
No offer by them to put right the work either..!!

I havent got years of experience, but a few quick sums and a look at the tables soon proved the job was a hit and run..! no thought put into it, bish bash bosh, wheres me money guv..

so there are still cowboys out there,how can this be with all the regs

 

[Amp David]

HI so is jason right, thanks

Hi, yes i'd say so.

Good Luck in your course Lee

 

[cbw]

Now, there was a post recently that showed how much load it took to melt 2.5, I cannot remember the figures but it was well in excess of any MCB we use in domestic

 

[Jason Smith]

They do require a lot more to melt them than it says in the books, but it seems there are safety standards added on all round. As long as we stick to the regs, we are fine.

 

[downnout]

Find this a bit of a strange one..
Lads are trying to help you and you seem to be questioning everything they're saying as if they don't have a clue.
CBW helped, and to me, you pretty much f&cked him off, then Jason helped and YOU still questioned it

Originally Posted by lee sandland
HI so is jason right, thanks

Why don't you just stick to making pastry. (end of rant)

 

[lee sandland]

Find this a bit of a strange one..
Lads are trying to help you and you seem to be questioning everything they're saying as if they don't have a clue.
CBW helped, and to me, you pretty much f&cked him off, then Jason helped and YOU still questioned it

Originally Posted by lee sandland
HI so is jason right, thanks

Why don't you just stick to making pastry. (end of rant)

oh whats your problem i have thanked jason and cbw for there help and they both still are helping me and i hav'nt questioned anyone

 

[downnout]

your attitude is my problem
you only thanked cbw after he jokingly asked for a thankyou and I think if you look at
'Originally Posted by lee sandland
HI so is jason right, thanks'
YOU questioned what Jason was trying to teach you

 

[lee sandland]

your attitude is my problem
you only thanked cbw after he jokingly asked for a thankyou and I think if you look at
'Originally Posted by lee sandland
HI so is jason right, thanks'
YOU questioned what Jason was trying to teach you

if in some way i've upset you wit my attitude ,but i did'nt realize the "THANK YOU" bit till after and i am new to this game and was'nt questioning jason i was replying to someones comment

 

[cbw]

I dont really know what to say here,

Thankyou to Downnout for noticing I was a bit peeved.

Thankyou to Lee for your PMs, I do hope to catch up with you!

I understand that you are new to this and sometimes things can be misconstrued, I am the worst for insulting people after a few ciders. (Perhaps the infamous BAS over on the darkside is worse than me)

Its not worth falling out over though, I believe it is all sorted!

James

 

[MarcT]

(Perhaps the infamous BAS over on the darkside is worse than me)

Do you mean the ubiquitous omnipresent BAS ?

 

[lee sandland]

if in some way i've upset you wit my attitude ,but i did'nt realize the "THANK YOU" bit till after and i am new to this game and was'nt questioning jason i was replying to someones comment

i have full respect for all the people on this site and there help ,so please do not take it out on me and for saying go back to cheffing why? i have trained young and old chefs in to the catering industry without insults and have a a high regard to people know more than me ,so for saying i have no respect is a understatment of me , anyway thanks no bad feelings just had to my point across ,lee