How many Watts on a 13amp Plug?

Question

Hi All - I have various disco lights that are 250w hologens. How many can I run off a standard 6 gang extention? Thanks

Answer 1

Hi,Use the standard formula that Power(watts)=Volts X Amps.
Assuming that the extension is rated at 13 Amps-using the equation-230(standard voltage in the UK) X 13 = 2990 Watts.
Therefore total lights on that extension if it is just the lights is 2990 divided by 250, which gives you 12 ish.
NOTE-this is dependent on the length of the lead and also if it is coiled or not(induced EMF)particularly critical if you are fully loading the lead whilst coiled.
Richard U

Just picking up on another reply from one of our answerer's-an RCD (Residual Current Device) trips the circuit if it senses a fault to earth-no safe guard to overloading.
To protect against potential over current faults you would need an circuit breaker(or fuse!)this is the newer version of the fuse-it reacts to over current faults much more quickly-and potentially alleviates overheating problems that can cause wiring to melt/burn.

Answer 2

Safely, you could run up to 3kw.

A standard kettle uses 3kw, as does a 3-bar electric fire. That is usually regarded as a safe maximum.

I'd still stick an R.C.D. in though, just to be sure...

Answer 3

The United Kingdom only:

European Union power 230VAC @ 50Hz

30A Ring Main

Go for No more than 2Kw Unless you know what else is on the Circuit

:o)

Answer 4

1300w doh