So the 1st thing i need help with 'cable calculations'?

[markymark2406]

Exercise 1.

Select a suitable size of single insulated cable (6491x) to be in a steel conduit to carry a load current of 30A and protected by a BS88 fuse.


design current Ib = ______________

overcurrent protective device . type:- _____ rating:-____

method of installation:-______________________

Current rating table:- _______ column:-________

correction factors (if any) Ca:-____ Cg:-___ Ci:-___

minimum current rating of cable= ___ = ____

.
. . cable size:- _____ mm2


How do i even start to work this out (easy to understand terms please?

 

[RF Lighting]

The first two answers are in the question.

Fill them in, and come back

 

[ColJack]

"design current (Ib)" is usually the number shortly after the word "load" in the question..

the "overcurrent protective device" is the words or numbers preceeding the word/s "fuse" or "circuit breaker"
the "rating" will be the next commonly available size above the Load current

"method of installation" is as stated in the question, you need to look up the reference method in the regs book..