socket circuit

[paddyscouse]

hi can some one advise me what to use for a radial socket circuit, i was thinking about 4 mil with a 32a mcb for kitchen

would then 2.5 with a 20a mcb for other room and the same for upstairs x3 beds

 

[sedgy34]

Neglegable depends, maybe if your going to supply Everything from that single radial!!!

As i've pointed out previously 2 X 4MM + 2.5mm = 10.5mm Accessory terminal CSA capacity generally 10mm!! Even if you did manage to squeeze them all in, the terminal screws would be protruding beyond the accessory terminal screw guards. I also doubt if the terminal screws will have more than 3 turns on them, if they even have that!!! Not exactly clever or professional, but that's just my opinion, and experience of 4mm final circuits with UK style wall accessories on projects i've worked on... There fine so long as you dont want to break into the circuit at a wall accessory!!

your oppinions are much respected on here but a 4mm radial is perfectly acceptable and branching off it with a 2.5mm to a socket is also acceptable (appendix 15)
many sparks use different methods this being one of them so you cant exactly say people who use different methods other than yours are unproffesional (not one of your best posts engineer 54!)

 

[Rockingit]

OOooh...... I feel a Harry Hill moment coming on! I too remember that article in PE and also thinking what a pointless waste of profiteering - if you were doing a textbook kitchen to the OSG then that's 8 x double sockets = 8xRCBO's before you've started to even think about outlets for white goods etc.

I think I too would always opt for a ring in a kitchen if at all possible just because they (kitchens) get changed about far more often than any other room in a house does, so future proofing as well as building in some redundancy. Plus, it doesn't really matter whether 2 x 4mm AND a 2.5 will fit in a socket or not - it's a pain in the rear to make happen either which way!

 

[BMelectrics]

I always assumed that a radial would be done with a 20A fuse? to provide more protection for the cable?

would a ring not be better in this situation for volt drop problems in a radial?

 

[Engineer54]

your oppinions are much respected on here but a 4mm radial is perfectly acceptable and branching off it with a 2.5mm to a socket is also acceptable (appendix 15)
many sparks use different methods this being one of them so you cant exactly say people who use different methods other than yours are unproffesional (not one of your best posts engineer 54!)

Sedgy, i really don't give a dame what it say's in your bible, ...saying it is always easier than actually doing it!! I'm basically talking here about spurring from wall accessories using the accessory terminals. What we ended up doing was making joints in the back boxes, which we could, as all our outlet boxes are of the deep variety, so plenty of room...

 

[somersetsparks]

My take on the issue really is- It's acceptable but just needlessly complicates the job

 

[Guest55]

This could build up to a nice sunday evening debate / rant / fight lol.
So lets get the party started ,

Rings Vs Radials ...........?
Pro's and con's...........

Discuss.......

 

[Engineer54]

I always assumed that a radial would be done with a 20A fuse? to provide more protection for the cable?

would a ring not be better in this situation for volt drop problems in a radial?

Always!! lol!!!

 

[Jimmy Boy]

I always assumed that a radial would be done with a 20A fuse? to provide more protection for the cable?

Depends on the CSA of the cable ? A shower circuit is a radial, as is usually high amp cookers etc,

would a ring not be better in this situation for volt drop problems in a radial?

You should calculate (Refer to the regs) the ccc and the vd on any circuit you design or may be adding additional loads to ? I would of thought that was basic electrical competence to do so.

 

[Top Cat]

People that shout the loudest aren't always correct!

 

[somersetsparks]

This could build up to a nice sunday evening debate / rant / fight lol.
So lets get the party started ,

Rings Vs Radials ...........? Rings
Pro's and con's........... There the british way! - none of this euro crap! - Come on ENgland!

Discuss.......

 

[sedgy34]

each to there own in this instance
mind you 32A radial in a domestic kitchen is hardly going to have a volt drop

i dont give a damn either lol

come to think of it i have in my house a 20A radial to each bedroom and loft
kitchen a ring circuit (had no 4mm at the time) lol
& lounge and dinning a ring circuit

 

[Engineer54]

People that shout the loudest aren't always correct!

Referring too what??

 

[Guitarist]

I think that sometimes people install radials purely because they don't know how to test an RFC properly, and certainly don't understand what all this "cross-connection" mumbo jumbo is about.
I have spoken to many "electricians" over the years who have never even heard of ohm's law. One I was speaking to last year even thought it was an American cop show!!!

 

[Top Cat]

Referring too what??

Why are you the only person to ask?

 

[Engineer54]

I think that sometimes people install radials purely because they don't know how to test an RFC properly, and certainly don't understand what all this "cross-connection" mumbo jumbo is about.
I have spoken to many "electricians" over the years who have never even heard of ohm's law. One I was speaking to last year even thought it was an American cop show!!!

Spot on!!