I want to correct power factor in single phase light so what rating capacitor i should connect across supply

 

Is this a fluorescent light? What does it say on the ballast inductor (choke)?
Current? Phase angle? Power rating of the lamp?
From these the correct value of capacitor can be calculated.

 

Why and what type and size of light?

What do you expect to gain from PF correction for a small load?

 

Why and what type and size of light?

What do you expect to gain from PF correction for a small load?

The landlord insisted on having their electrician put a splashproof fitting in the bog - it was a 28W D fluorescent, I think the PFC cap was 4uF.

The cowboy contractor was a complete dumb*** and fitted the wrong ballast, so the light never worked properly and didn't last long.

Instead of calling in their contractor to **** it up even more - I ordered an electronic ballast.

In the past; my flat has had problems with mains transients, so I added an MOV and left the PFC cap in for a bit of filtering.

Apparently; the more efficient electronic ballast gives the same light with only 20W - so the conversion pays for itself (eventually).