Replacement storage heater, cost of installation?

Homer_home

Ectophile said:

Homer_home said:

nofoollikeold said:

1. At 230 volts (European standard) your 3.3 kW heater will draw (3300 / 230) = 14.35 amps.
2. I would consider that much too close to the fuse rating of 15 amps.  Don't forget none of these things are accurate to more than a few percent. 
3. You would do well, at the very least, to get a qualified electrician confirm that the existing cable is of sufficient capacity and that the fuse can handle the load.
4. Don't forget that cable current carrying capacity must be de-rated for such things as being covered.  

14.35 amps is plenty fine for a 15 amp breaker 
Breakers are designed to protect the cable so as long as the cable is rated to take 14.35a the MCB will do its job 

Or does this go against your "opinion"

P.s. can you explain (4) what does being covered mean?

I'm not nofoollikeold but...

The current rating of a cable depends on how much cooling it gets.  A cable that's clipped onto a wall (so it's got fresh air around it) is completely different to a cable in the loft, buried under 6 inches of loft insulation.

There are big tables of current limits for different types of cables in different situations.

You are correct, which is why I said "as long as the cable is rated to take the 14.35A"

Homer_home

TELLIT01 said:

Wow!  There seems to be a lot of 'passive aggressive' posting on the boards lately.  Every person who posts is only expressing their personal opinion unless they back it up with solid fact.  Others may have different opinions and that's fine as long as they aren't suggesting actions which may be dangerous or unlawful.

Yes but offering personal opinions on dangerous things such as electricity or gas can lead to dangerous occurrences and clearly that is not a good idea

There are plenty of electrical forums that have professional sparks on them who can give informed advice , these posters who offer their personal "opinions" on such matters should instead direct the op to one of these instead where they can get proper advice