Spur from cooker circuit

[derekhughes]

Is it allowed to take a spur to feed under cupboard lights from a cooker circuit?

 

[pdcelec]

NO

 

[and1145]

I thought a fused spur would have been ok.??

 

[ban-all-sheds]

Indeed - what's wrong with a fused spur?

 

[pdcelec]

Why not spur from the kitchen ring?

 

[derekhughes]

That is what I would have done - I have had a kitchen installed and the electrician (?) has taken a 1.5mm cable from a junction box in the cooker cable to a switched spur box.
This does not seem right to me!

Derek

 

[pdcelec]

No that is not right. The 1.5 is not correctly protected

 

[andy]

Is it allowed to take a spur to feed under cupboard lights from a cooker circuit?

Why not spur from the kitchen ring?

That is what I would have done -

any1 see some inconsistency there?

I have had a kitchen installed and the electrician (?) has taken a 1.5mm cable from a junction box in the cooker cable to a switched spur box.
This does not seem right to me!

Derek

cable to the spur should be the same rating as the circuit its taken from. which will most likely be 6mm. if there is a fault then the 1.5mm will melt and cause a fire before the MCB trips.

and it doesnt sound like he's part P registered or has any intentions on gettin LABC to check the work... which is illegal

 

[plugwash]

i don't belive spuring from a cooker cuircuit is explicitly prohibited provided you make sure you dont' create a likely overload situation.

what is more arguable is the size of cable to use. some sparkys claim you have to use the same size cable as the cooker cuircuits. others claim that provided the smaller cable gives adequate short cuircuit protection and you have a fuse downstream to protect it from overload then its fine.

and joining in an extra 6mm or 10mm cable requires a big JB (tlc do a 60A one which is big enough to take a 10mm spur off a 10mm cuircuit iirc)

 

[user56565]

i asked this in another topic as i was unsure about a fuse downstream: //www.diynot.com/forums/viewtopic.php?t=26997

others claim that provided the smaller cable gives adequate short cuircuit protection and you have a fuse downstream to protect it from overload then its fine.

i would think its perfectly safe for a 1.5 connected to the cooker circuit providing it was fused downstream (overload protection), and providing disconnection times were quick enough (short circuit protection)

 

[Steve]

what if someone slices through the 1.5?

 

[user56565]

the short circuit would trip the MCB almost instantly. whoever sliced into it would know immediately, and would (i hope) get it fixed.

 

[breezer]

the short circuit would trip the MCB almost instantly. whoever sliced into it would know immediately, and would (i hope) get it fixed.

not if they were dead

 

[plugwash]

true that applies to slicing through any cable though. lukilly people usually do it with drills which tend to have plastic bodies.

 

[user56565]

as plugwash says, this could occur with any cable anywhere. the cable fused downstream is no more dangerous than any other cable in the house.