Hand Dryers

[matt77]

I am wiring 3 x 1650 w hand dryers is a 4mm radial circuit on a 32 amp breaker suitable ? Thanks

 

[Sidewinder]

Hello matt77,

Welcome to the forum.

What have you got from your circuit design calculations, post them up and we'll look over them to see if you have made any errors or overlooked anything.

 

[Blue Duck]

Hello matt77,

Welcome to the forum.

What have you got from your circuit design calculations, post them up and we'll look over them to see if you have made any errors or overlooked anything.

+1

 

[ProDave]

What do manufacturers instructions say about OCPD?

 

[Evans Electric]

Yes 

But we all have different ideas ,  I'd have probably gone 2.5.mm radial   on a 20A  as they are only on for 1 minute each time .  But thats me , 4mm seems a bit OTT .    13A Spur at each one , if they all operate together it won't be for long.    Not knowing the cable run etc . 

We'll now get a thousand versions , which should be interesting .

 

[kerching]

4mm twin run through 100mm plus of insulation for more than 500mm is only good for 16 amp....i seem to recall

Just saying

 

[Evans Electric]

I was imagining a surface conduit up through three office floors for some reason . 

Again if passing through insulation , are they on long enough to create any temp rise . ?

 

[Blue Duck]

1.5 mm micc on a yellow 3036 with rcd spurs :lol:

 

[Andy™]

yellow 3036?! wonder how many 5DW knows what they are without looking on google

 

[Blue Duck]

You might even get away with blue one if it's a pub and not a busy train station.

 

[Andy™]

or a 'green' in a yellow carrier?

 

[kerching]

Go ORANGE.........

 

[Blue Duck]

And what cable would you recommend?

 

[Andy™]

Go ORANGE.........

ill stick with vodafone

 

[matt77]

The cable run is 50 to 75m though loft insulation ,in a busy training centre and the will be in use a lot

 

[Sidewinder]

So matt is it 50 or 75?

How much insulation?

What do your cable calcs say.

 

[NozSpark]

The cable run is 50 to 75m though loft insulation ,in a busy training centre and the will be in use a lot

You're assuming that people will be washing their hands????

 

[Sharpend]

You're assuming that people will be washing their hands????

Aren't they for warming your hands and face after walking into work in a freezing cold day? What's this about washing!

 

[Murdoch]

ha,ha.

He's posted this on another forum too and got similar questions!

 

[SPECIAL LOCATION]

If you connect these instead you don't need any cable at all!!!!!!!!!!!!!

http://www.screwfix.com/p/scott-hand-paper-towels-pack-of-3600/38722