Help needed!

[SBlandford]

Good afternoon guys.

My name is Scott Blandford and I'm writing this because I could use a hand, as I'm not that knowledgeable on matters to do with electrical work and the like. I'm currently writing an academic report for my course (Hospitality Management) and I have a couple of questions which I have no idea about and any help with them would be a huge help.

Regards
Scott

The questions are:

What colour should the outside sheathing of a PVC ring main cable be under new regulations?

Why does a TV have 3 amp cartridge fuses in its plug but an electric fan heater have a 13 amp fuse?

What would happen if you got them the wrong way around?

What should you do if an RCD covering the kitchen keeps tripping out on a busy Saturday night?

 

[telectrix]

1. grey or white.
2. fuse is fitted to match the load ( amount of current drawn.
3. 3A would blow on the fan heater. 13A would not protect the tv flex in the event of a FAULT.
4. take her indoors out for a meal. call an electrician on sunday morning ( we love sunday work)

 

[SBlandford]

Cheers for the reply telectrix. On the fourth question, I meant what would you do if the RCD system kept tripping out in a commercial environment such as a restaurant kitchen? Although if it was at home I'm sure I'd take her for a curry to ease the pain hone:

 

[telectrix]

first, unplug all appliances. if that clears the fault, plug back in 1 at a time till you find the faulty appliance. if it does not clear, then all you can do is switch each breaker off and see if it's 1 particular circuit causing the tripping. then it's time to call a sparks.

 

[SBlandford]

Thanks mate, a very big help. Have a good day =)

 

[Deleted member 26818]

There are no requirements for the colour of an outer sheath of a cable.
It can be any colour, as long as the conductors are correctly identified either by colour or by alpha numeric means.
I would question why a commercial kitchen has RCD protection.
It not a requirement of the Regulations, and to be honest, because of the damp atmosphere nuisance tripping should have been expected by the designer.

 

[GLENNSPARK]

first, unplug all appliances. if that clears the fault, plug back in 1 at a time till you find the faulty appliance. if it does not clear, then all you can do is switch each breaker off and see if it's 1 particular circuit causing the tripping. then it's time to call a sparks.

well you could always wire it out for a temp.......or if you wanted to be safer then just drop out the RCD and replace with a double pole incomer.....your choice of amperage rating of course......should hold anyway......

 

[WPD Lad]

well you could always wire it out for a temp.......or if you wanted to be safer then just drop out the RCD and replace with a double pole incomer.....your choice of amperage rating of course......should hold anyway......

Swap an RCD for an isolator? :0

 

[GLENNSPARK]

Swap an RCD for an isolator? :0

come on!!....all in jest.....who the hell would do this??.....

 

[alarm man]

Cheers for the reply telectrix. On the fourth question, I meant what would you do if the RCD system kept tripping out in a commercial environment such as a restaurant kitchen? Although if it was at home I'm sure I'd take her for a curry to ease the pain hone:

on the 4th question,find a good local spark sole trader or company give him all your electrical work without without question ie 3 quotes etc,that way when your kitchen goes down on a busy night he will be there quick as to get you back up,the cost of a nights lost business and the damage to your restaurants name will be small change to the bill from the spark.

 

[Adam W]

Prior to 2004 PVC 6242Y (twin & earth) cable could be sheathed in grey or white. Since then PVC 6242YH* is sheathed grey. 6242BH (twin & earth) is sheathed white, but is made from cross linked polyethylene, which has a higher resistance to temperature and doesn't give off the same noxious fumes as PVC when burned, so fares better in the event of a fire and is generally preferred in commercial environments.

*The H stands for 'Harmonised' which refers to the 'new' colours, ie brown and blue rather than the 'old' red and black.


Give them that answer and they'll KNOW you cheated!