What kind of flex

[jordand]

What kind of flex do you wire boilers with? Always get the spark to do it but hes on holiday and aint too sure if its 0.75, 1.0 or 1.5 mm flex

 

[stani]

1.0mm is more than adequate.

 

[mountainman]

Unless it's a 30kw electric boiler tho!

 

[jordand]

Cheers guys that'l do steal the sparks wages

 

[kirkgas]

0.75mm2 heat resistant flex is all that's usually required

 

[a12jpm]

Post the make and model and I'll check and let you know. Need more info, different boilers different currents.

 

[andyg0507]

cant see what make and model of boiler makes a difference? 0.75mm or even 1mm is usually fine, why does boiler make and model make a difference? please enlighten me

 

[stani]

Maximum fuse size is 3amp either 0.75 or 1.00 mm perfect

 

[jordand]

Betacom 24a

 

[andyg0507]

doesnt make a difference what boiler it is with being a new combi, fuse rating is 3amp so as already mentioned 0.75mm2 or 1.mm2 will be fine, also with that boiler you can wire it off the 240v or 24v side.

 

[a12jpm]

1.0mm will do the job.

 

[a12jpm]

doesnt make a difference what boiler it is with being a new combi, fuse rating is 3amp so as already mentioned 0.75mm2 or 1.mm2 will be fine, also with that boiler you can wire it off the 240v or 24v side.

No mention in op what kind of boiler it was.

 

[andyg0507]

please tell me why this would make a difference to op's question

 

[stani]

Betacom24a requires maximum 3amp fuse.

 

[a12jpm]

please tell me why this would make a difference to op's question

Gas, oil, electric all draw different amounts of current. Different amounts of current require different flex.

 

[andyg0507]

but all work off same amp fuse.

 

[mfgs]

I use 0.75mm, and always heat resistant aswell.

 

[a12jpm]

but all work off same amp fuse.

Gas - normally 3 amp
Oil - can be up to 5 amp
Electric - well I've done a 45amp before but I'm sure there's bigger.

 

[stani]

I think we all guessed the op was talking about domestic size gas boilers due to the thread starting in GSR forum, obviously larger commercial are wired differently, oil would have been in the oil/solid fuel and electric boilers are not Words true gas engineers ever, ever, ever talk about.