downlight problem
- Thread starter bigmal
- Start date
A change in conductor size won't cause a fuse/MCB, RCD or lamp to blow unless it is overloaded to the point where the insulation is knackered
If you give us some more info we might be able to offer some useful advice. What is actually 'blowing'? What size fuse/MCB is protecting the circuit. Where does the feed for the junction box come from? Do any of the cables run through adverse conditions (damp, insulation, rodents, etc etc)? What lamps are fitted in the downlights?
If you give us some more info we might be able to offer some useful advice. What is actually 'blowing'? What size fuse/MCB is protecting the circuit. Where does the feed for the junction box come from? Do any of the cables run through adverse conditions (damp, insulation, rodents, etc etc)? What lamps are fitted in the downlights?
Crafty said:
What if the protective device was 6 or 10amps? You would still insist on a fuse between the change of conductor sizes?
Crafty said:
?
more to the point why has he got two cables between the JB and the light ?
Crafty said:
Is there a regulation stating that differing sizes of conductors can't be used on the same circuit providing that the smallest conductor can carry current which is equal to or larger than the design current and size of protective device (factors taken into consideration)?
I agree it's not best practice though.
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