UK I replaced the light and now my heater switch won't switch on.

[Fishing heads]

Hi I replaced few of the lights 4 to be precise 2 downstairs and 2 upstairs and now my heater won't turn on.
Is it just the coincidence? Did I make a mistake? All the other socket is working but the switch next to the heater won't turn on. I replaced the fuse.. also, if I am correct, light and sockets won't be connected because of different amps . Just need a confirmation or possible solutions.

Thanks
Fish head.

 

[Fishing heads]

2.5mm T/E on a 32A CPD does not satisfy Iz ≥ In

Okay thank you, I went a head and bought CRABTREE STARBREAKER 16A SP TYPE B MCB (98018) from Screwfix. I'll replace it as soon as it gets delevered.

 

[JBW175]

Okay thank you, I went a head and bought CRABTREE STARBREAKER 16A SP TYPE B MCB (98018) from Screwfix. I'll replace it as soon as it gets delevered.

you realise that's notifiable work? and should as such be carried out by a competant person right?
[automerge]1571746846[/automerge]

you realise that's notifiable work? and should as such be carried out by a competant person right?

and also needs to be tested and certified.

 

[telectrix]

you realise that's notifiable work? and should as such be carried out by a competant person right?
[automerge]1571746846[/automerge]


and also needs to be tested and certified.

i'd disagree with notifiable work. it's a direct replacement/repair, not a new circuit. however testing the circuit and producing a MWC would be advised, in case there are any problems that could lead to danger.

 

[JBW175]

i'd disagree with notifiable work. it's a direct replacement/repair, not a new circuit. however testing the circuit and producing a MWC would be advised, in case there are any problems that could lead to danger.

would it not be classed an "addition or alteration of a circuit"? as it's a differently rated MCB and therefore notifiable?

not trying to be argumentative, it's just that's my interpretation of it. i'm always looking to get other peoples takes on it & improve my knowledge though. ?
[automerge]1571750659[/automerge]

would it not be classed an "addition or alteration of a circuit"? as it's a differently rated MCB and therefore notifiable?

not trying to be argumentative, it's just that's my interpretation of it. i'm always looking to get other peoples takes on it & improve my knowledge though. ?

Cancel my last, it's not in a special location?‍

 

[telectrix]

same rating - 16A. so it's not an alteration as such.

 

[Deleted member 105166]

it's a differently rated MCB

I thought it was the same as previous, i.e. a Type B 16A

 

[JBW175]

I thought it was the same as previous, i.e. a Type B 16A

My bad, got confused with all the talk of 20A 32A MCB's etc... i thought he was swapping out for a different type.

someone really needs to teach me how to read.

 

[telectrix]

My bad, got confused with all the talk of 20A 32A MCB's etc... i thought he was swapping out for a different type.

someone really needs to teach me how to read.

should be a specsavers in Portsmouth. it's full of sailors that can't see past a rum ration.

 

[JBW175]

should be a specsavers in Portsmouth. it's full of sailors that can't see past a rum ration.

That’s half the trouble, I’m a soldier surrounded by sailors ?

 

[fairlight]

2.5mm T/E on a 32A CPD does not satisfy Iz ≥ In

Please explain how a spur off a 32a ring circuit is permitted then? It is permitted because the requirements for fault protection are met and overload protection is afforded by the fact that the load is restricted to 2x13a fused loads, =26a maximum. Same applies to the OP's circuit except overload protection is afforded by one, not two 13a fuses =13a.

 

[Deleted member 105166]

Please explain how a spur off a 32a ring circuit is permitted then? It is permitted because the requirements for fault protection are met and overload protection is afforded by the fact that the load is restricted to 2x13a fused loads, =26a maximum. Same applies to the OP's circuit except overload protection is afforded by one, not two 13a fuses =13a.

Reading through this topic again, I do see where you are coming from.
Do you agree with my understanding being, if the OP created a fused spur, at the origin of the circuit in this case, i.e. spurred at the 32A MCB, then the 1.5 T/E is acceptable and in line with OSG H2.3. However if he had removed the ring final conductors from the MCB, the cable and FCU in question is no longer a fused spur on an RFC, and is now a radial circuit, either requiring a 20A CPD, alternatively be wired in 4.0mm T/E, as per Table H2.1
Happy to stand corrected, if I have misunderstood.

 

[fairlight]

Thanks for your measured reply. I do not have the BBB to hand for the reg no's but overload protection to any circuit can be omitted if the load is fixed, or if the load is restricted by a downstream device. So if the OP's circuit is a radial serving a single 13a fcu then it will comply on a 32a OCPD as long as fault protection is afforded, which it almost certainly will be. That said same as you, I'd put it on a 16a device, but the advise given to the OP that putting it on a 32a is a safety issue and incorrect is wrong. It would comply.
I'm afraid your comment that a spur from the MCB is a fused spur is incorrect, it's an unfused spur. A fused spur is an extension to a ring circuit spur fed through a 13a fcu, it can serve any number of points on the load side of the fcu