circuit load question

[andemz]

Hi all,

I have a 16amp breaker in my consumer unit and a 1.5mm 3 core SWA has been run 15 meters from this to a consumer unit outside. The consumer unit outside is a mini consumer unit and has 2 breakers in it, with a main switch.

1) What is the maximum amount of watts that can run on a 1.5mm 3 core swa

I wanted to run a 2-3kw external elector pond heater, but my calculations are telling me that this is not possibkle with this current setup, as it would be overloaded.

Please advise.

regards

andemz

 

[ban-all-sheds]

• http://www.diynot.com/wiki/electrics:mcbtocable
  
  
• http://www.tlc-direct.co.uk/Book/4.3.1.htm
  
  
• http://web.archive.org/web/20080213151445/http://www.kevinboone.com/cableselection_web.pdf
  
  
• http://www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html
  

 

[PrenticeBoyofDerry]

Cable Size 1.5 mm
Voltage Drop 5.28 Volts.
Percentage Drop 2.3%
Current Load 13.0 Amps
Max Cable Load* 18.7 Amps

at 3kw of power

You have 16amp breaker that can supply 3.68kw of power.

 

[ban-all-sheds]

Give a man a fish......

 

[andemz]

Thanks for the help