garden office supply

[J.C.E]

happy Monday evening chaps!

haven't got my regs handy so for quoting purpose I tried using the tlc calculator but it says 'no suitable cable found'

run is apparently 100m -going my customers email -quoting on thurs
load is: (as per customer)
PC with 4 screens
Sonos One speaker
2 x LED ceiling lights
1 x LED security light
1 x Gree home air conditioner/dehumidifier/heater 5Kw
1 x Kettle

swa to be cleated rather than buried

so using Voltage Drop Calculator | TLC Electrical - https://www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html
I allowed for 8kw- with lighting circuit @ 100m and says 'no suitable cable found'

obviously will check my book when I can but if any of you have any quick comebacks

would have thought 10mm 3core at 100m may be a push!
so poss 16mm

not sure if tns or tncs yet- will find out thurs

 

[HandySparks]

If you want to keep below the 3% VD for lighting, you'll have to go up to 25mm².

 

[J.C.E]

If you want to keep below the 3% VD for lighting, you'll have to go up to 25mm².

even thats just out lol!!
1.75 x 40 x 100/1000= 7

 

[LeeH]

Do you need that 3rd core?

 

[HandySparks]

even thats just out lol!!
1.75 x 40 x 100/1000= 7

What's the '40' figure?

 

[J.C.E]

What's the '40' figure?

1.74 x 34a x 100m /1000= 5.9

so could used 25mm

 

[Leesparkykent]

happy Monday evening chaps!

haven't got my regs handy so for quoting purpose I tried using the tlc calculator but it says 'no suitable cable found'

run is apparently 100m -going my customers email -quoting on thurs
load is: (as per customer)
PC with 4 screens
Sonos One speaker
2 x LED ceiling lights
1 x LED security light
1 x Gree home air conditioner/dehumidifier/heater 5Kw
1 x Kettle

swa to be cleated rather than buried

so using Voltage Drop Calculator | TLC Electrical - https://www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html
I allowed for 8kw- with lighting circuit @ 100m and says 'no suitable cable found'

obviously will check my book when I can but if any of you have any quick comebacks

would have thought 10mm 3core at 100m may be a push!
so poss 16mm

not sure if tns or tncs yet- will find out thurs

 

[bigspark17]

What software is that lee?

 

[J.C.E]

What software is that lee?

what he said

 

[HandySparks]

Plus, of course, the cable will only be running at a small proportion of its rated current, so its temperature will be below rated, so the conductor resistance and therefore volt drop will be lower than shown by the usual simple calc.

 

[Leesparkykent]

What software is that lee?

what he said

http://www.jarsoftelectrical.co.uk/index.html

I still double check everything but handy for pointing you in the right direction

 

[Wilko]

Hi - that is spooky cool Lee. Looking at it, it seems to show that if it's TNS up near the top end then 40A MCB may have to be derated? (run it again run it again )

 

[Leesparkykent]

Hi - that is spooky cool Lee. Looking at it, it seems to show that if it's TNS up near the top end then 40A MCB may have to be derated? (run it again run it again )

 

[J.C.E]

does that app have a adiabatic calc to work out whether i need a 2 or 3c Lee?

 

[Leesparkykent]

does that app have a adiabatic calc to work out whether i need a 2 or 3c Lee?

for 16mm 0.00495x100=0.495

for 25mm 0.00442x100=0.442

 

[Octopus]

Lee

Do you rate this software - been thinking about buying something for a while now and at £19.99 it seems OK!

Your thoughts?


Thanks