A3 radial circuit ????

[Knobhead]

My comment about a photo studio was genuine (though I too think a little bit of growing is more likely!) and in my area of expertise I regularly handle 1kw / 2kw single lanterns as Tungsten, 5kw Halides etc.

I was just on about my enlarger :yes: The lighting panel in the loft apex had a 65W safe light, 200W of daylight lamps for colour assessment and a 65W fluorescent for general work. (Great when my son was little, he’d spend hours playing with the rotary selector, the lights going like a disco!)

I only used studio flash so no tungsten lighting. Mind you two 2.25Kj units take about 12A each when charging but they were in another part of the house. I once worked out the current output from one unit, it came to a staggering 400A @ 660V for a few mS. I had one of the lamp connectors explode in my hand, it put me in hospital! I was lucky, a few photographic assistants were killed by them.