Course questions

[MICHAL830125]

Hi
I have little problem with questions from my course for C@G 2330 level 3.
I cant find answers anywhere, buuuu...
please help:

question 1:
what is the recognised practice for the supply to a new installation whose assessed demand is expected to be greater than 23kW? To install:
a) A 50mm 2core PVC/SWA sub mains cable
b)A 3 phase supply
c) 50mm meter tails
d) a 200A BS1361 fuse in the service cut out

question 2:
Earth fault loop impendance (Zs) test: When conducting a Zs test on a ring final circuit, the Zs readings taken at the socket outlets gradualy increase toward a particular outlet, then gradualy decrease moving away from it. This is baceuse the socket having the highest Zs reading:
a)has a loose connection
b)is the closest one the midpoint of the ring
c)is a non-fuse spur
d)is the furthest one from the midpoint of the ring

question 3:

Determine the actual Zs of a A3 radial circuit wired in 2.5mm PVC/PVC flat cable having a 1.5mm CPC it is lenght of run is 40m and it is installed in a location that will never exceed 30C. The value of Ze is 0.35 Ohms.
a) 1.32 Ohms
b) 1.16
c) 1.13
d) 0.37

thank you for any help.

 

[sparky1502]

do u attend college i am currently attending college for my level 3 also now i know my notes will cover all those questions but why have your lectures not explained this to you....?u need to go and speak to them especially if your paying and thy are not teaching you

 

[tonys]

Hes right mate, get the tutors to help you understand what your meant to be learning, giving you the answers won't do you any good in the long run.

 

[MICHAL830125]

yes but they never give you any answers, i want to keep good marks

 

[sparky1502]

mate your paying your hard earned brass for these tutors to teach you sit down and explain to them your that your not understanding and dont be afraid to hold the class up and take notes i take loads of notes because you miss loads in class i go home then and type them up neat so when it comes to revision its all in order.there are some lads on my course who dont even bother bringing in a pen i cant be doing with them cos they stop the likes of me and you learning keep up with it maybe look and buying a course book from amazon think its about 8-9 quid for the l3 book

 

[Mohammed1234]

Hi mate have you got the answers
I am stuck in the same questions ?

 

[westward10]

Hi mate have you got the answers
I am stuck in the same questions ?

These people haven't been on the forum for ten years so I would start a new thread.