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Sorry, I thought the 1.5mm was also t&e, 1.5mm flex is very big for a boiler,
 
Always thought the fuse was there to protect the cable so the fuse melts before the cable.

As above thought the 1.5 was t&e to the spur not from the spur to the appliance, you are right,
 
Cables are often oversized. I never use any heavier cable to a boiler than 1.0mm and that is more than plenty.
Fuses are for protecting cable to appliance and, perhaps slightly less importantly, the appliance itself.
 
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T&E cable from a spur to a boiler is fine, providing you use a wiring box, or another spur to take white 3 core round cable into boiler
 
So have you taken 1.5t&e into the boiler

I havent done anything, this is just one ive came across that has got me thinking. But yes t+e into boiler. Mi's say at least 0.75mm pvc insulated cable....dosent say you have to use flex.
 
To throw a spanner the works, you could feed an FCU with a run of 1.5mm t+e clipped direct from the consumer unit and protect it with a 16A 60898.
 
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I havent done anything, this is just one ive came across that has got me thinking. But yes t+e into boiler. Mi's say at least 0.75mm pvc insulated cable....dosent say you have to use flex.

dude it sounds like your out of your depth, from the fused spur to the boiler use flex looks much better and you wont have any problems with the glands on the boiler
 
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