Honeywell 2 amp fused connection unit

[Ian Earnshaw]

And thats my point very unusual hence the thread......

 

[Ian Earnshaw]

And thats my point very unusual hence the thread......

 

[Spoon]

I did know they have intenal fuses its the external we are on about thanks for reply guys girls

My asking about internal fuses was to do with @Michael Sands post #2. IMO a 3A fuse would be ok as the PCB has it's own fuses to protect that.

 

[Ian Earnshaw]

Ahhh i see yes a few said 3 amp be fine i thought that wanted to make sure

 

[KWCFC]

honeywell are wrong saying to use a sFCU. should be unswitched. so they're probably wrong about the fuse size also. i've been installing alarms since 1981 and without exception, all call for a 3A unswitched FCU.

I agree with this.

There is a fuse within the panel that protects all the equipment and a 3A fuse should protect your flex to panel perfectly fine...

 

[Ian Earnshaw]

thanks all i think i have a definitive answer just teething on alarm systems so had to make sure as sometimes doing it by the book is a tad bit overzealous some times!!

 

[GeorgeCooke]

Manufacturers instructions are guidance only and do not have to be followed, especially when they are wrong, as is the case here.

1. Although 2 amp fuses for plugs/fcus are available the only sizes officially recognised are 3 amp and 13 amp.
2. The fuse is to protect the cable which is 1mm not the appliance on the end of it which has its own internal protection.
3. What would happen in other countries where fcus are neither available nor compliant and circuits are protected by a 16 amp MCB?