Checking installation methods of RFC

[Leesparkykent]

2 radials.

 

[Adam W]

Don't want the heaters hard wired due to it being a sports hall.

What is the reasoning behind this? I'd have gone for 2x rings with the heaters on FCUs.
If it's only going to be temporary a diesel or propane heater will chuck out a lot more heat than small fan heaters.

Or is it a trick question, ie you don't need heating at the moment?

 

[Pete999]

What is the reasoning behind this? I'd have gone for 2x rings with the heaters on FCUs.
If it's only going to be temporary a diesel or propane heater will chuck out a lot more heat than small fan heaters.

Or is it a trick question, ie you don't need heating at the moment?

Think of the amount of callouts if you fitted these heaters on a 13 A fcu
3000W /230 =13.04A mps wouldn't take long to blow those would it, an why Ring Final, what's the point? plus the BS 7671 RECOMENDS that a fixed load of plus 2KW would be better on a dedicated circuit.

 

[Adam W]

Think of the amount of callouts if you fitted these heaters on a 13 A fcu
3000W /230 =13.04A mps wouldn't take long to blow those would it, an why Ring Final, what's the point? plus the BS 7671 RECOMENDS that a fixed load of plus 2KW would be better on a dedicated circuit.

Maybe, but 3000/240 = 12.5, 240v being more like what you actually get in the UK. 2x2.5mm are easier to terminate than 2x4mm. If the ring only consisted of FCUs supplying heaters then that would make it a "dedicated circuit" would it not?

 

[Pete999]

Maybe, but 3000/240 = 12.5, 240v being more like what you actually get in the UK. 2x2.5mm are easier to terminate than 2x4mm. If the ring only consisted of FCUs supplying heaters then that would make it a "dedicated circuit" would it not?

It could well do until some idiot come along and sees it's RFC and starts adding 13Amp socket all over the shop, not realising it's a dedicated circuit for heaters.

 

[hightower]

Why would there be 2x4mm @Adam W ? I'm running dedicated radials, 16A breaker, single socket (for a single 13A appliance), 1x2.5mm.

As for the FCU question, I'd have thought it would have been obvious from the information I've posted already. This is a sports hall. Having blow heaters lying around the floor when little Johnny is playing footy isn't going to be very useful. On plugs, they can plug them in when the room is due to be used for exams, unplug them when due to be used for sports.

 

[hightower]

Maybe, but 3000/240 = 12.5, 240v being more like what you actually get in the UK. 2x2.5mm are easier to terminate than 2x4mm. If the ring only consisted of FCUs supplying heaters then that would make it a "dedicated circuit" would it not?

Hmmm good point, thanks. Remind me, what reg is it that says we're allowed to design by 240v again? I forget.

 

[Pete999]

Nice

Hmmm good point, thanks. Remind me, what reg is it that says we're allowed to design by 240v again? I forget.

HT nice

 

[Adam W]

I thought you were asking for suggestions.

 

[ipf]

Think of the amount of callouts if you fitted these heaters on a 13 A fcu
3000W /230 =13.04A mps wouldn't take long to blow those would it, an why Ring Final, what's the point? plus the BS 7671 RECOMENDS that a fixed load of plus 2KW would be better on a dedicated circuit.

They would take a bit of 'blowing' but, from what I've seen, the plug/sockets would be giving a fair bit of heat off.
One place has one on a 4mm radial (a couple of other sockets involved) no fuse problems but a lot of heat at the plug....it worries them a bit.
What surprises me about these 3kw heaters is that some do come with a 13amp plug top fitted.
If you're looking to future additions, maybe 4mm2, DP switches.

 

[ipf]

They would take a bit of 'blowing' but, from what I've seen, the plug/sockets would be giving a fair bit of heat off.
One place has one on a 4mm radial (a couple of other sockets involved) no fuse problems but a lot of heat at the plug....it worries them a bit.
What surprises me about these 3kw heaters is that some do come with a 13amp plug top fitted.
If you're looking to future additions, maybe 4mm2, 20amp DP switches.

 

[Adam W]

Nice

HT nice

Perhaps you'd care to explain that one then Pete?
How is asking for suggestions and then making sarcastic jabs when people do suggest things "nice"?

 

[hightower]

I thought you were asking for suggestions.

I am mate, but I would prefer it if the suggestions complied with the rule book.

 

[Risteard]

A ring final circuit serving two single socket outlets seems daft to me.

 

[Flanders]

As others have said i would go for 16 amp sockets id go for the gwis switched interlock ones as they can take a good bashing from them pesky kids