Training to be a sparky

[Scholes]

hi guys, I'm having trouble understanding a question in my course book.
Q. "State the current ratings of the following ring final circuit components and accessories."

1. circuit protective device -
2. socket outlet -
3. fused connection unit -

 

[westward10]

Have you an answer for any of the questions.

 

[DPG]

Looks like another badly worded question to me.

 

[Dustydazzler]

I don't really even understand the questions , but I assume all 3 should be rated at 32 amps

 

[timhoward]

1 could also be a 30 amp rewirable fuse. In theory at least!

 

[pc1966]

1 could also be a 30 amp rewirable fuse. In theory at least!

Or less would be safe as well, though the regs normally say 30A (BS 3036) / 32A (BS88 / MCB / RCBO)

 

[westward10]

Can we not just throw answers up or a trainee learns nothing.

 

[timhoward]

I'd encourage @Scholes to have a look at 433.1.204 page 95 of big brown book. It covers 1 and 2.
Part 3 is a little ambiguous in my humble opinion.

 

[Scholes]

Looks like another badly worded question to me.

that is how it is worded in my Training Book. i still cant find the answer.

 

[Scholes]

Have you an answer for any of the questions.

no

 

[Scholes]

I'd encourage @Scholes to have a look at 433.1.204 page 95 of big brown book. It covers 1 and 2.
Part 3 is a little ambiguous in my humble opinion.

Which big brown book is that please? The book I'm training from is "Domestic Electrical Installer" Sec 1 Pt A Mod 1 is a red and white book.

 

[westward10]

What course are you studying.

 

[pc1966]

Which big brown book is that please?

The BS7671:2018+A2:2022 wiring regs, they are now with a brown cover.

Before AM2 it was blue cover, so both get nicknamed "BBB" for Big Brown/Blue Book.

 

[timhoward]

Which big brown book is that please? The book I'm training from is "Domestic Electrical Installer" Sec 1 Pt A Mod 1 is a red and white book.

Requirements for Electrical Installations, IET Wiring Regulations, Eighteenth Edition, BS 7671:2018+A2:2022 (Electrical Regulations): Amazon.co.uk: The Institution of Engineering and Technology: 9781839532184: Books

Buy Requirements for Electrical Installations, IET Wiring Regulations, Eighteenth Edition, BS 7671:2018+A2:2022 (Electrical Regulations) by The Institution of Engineering and Technology (ISBN: 9781839532184) from Amazon's Book Store. Everyday low prices and free delivery on eligible orders.

www.amazon.co.uk

I don't want to undermine however your college is trying to teach you. I can't tell you where to find the answer in your text book.

Part 1 is getting at fact that every circuit has an over-current protective device (whether fuse or circuit breaker).
Maybe your text book has examples of frequently used or standard circuits that show what the protective device is?

Failing that this video may help: