Some of the older shelters here still use 2 ft 40 watt tubes (singles).
I like to keep these going and to continue using 2 ft 40 watters . There arent a lot of these left now and its nice to keep them going, I have a good stock (nearly 200) , Crompton 2ft 40 watt tubes which I use for these, so Im ok for tubes.
The installations use a single batten inside a vandal- resistant light "box". They are controlled by a 2-part ,part-night photocell (an SS59) usually.
The problem Ive got now (unsurprisingly) is getting spare / replacement ballasts. I used to have a few Tridonic 2ft 40 watt ballasts and some Parmars , but in the last 10 years or so it has become almost impossible to get a single 2ft 40 watt
I understand that 2 x 2ft 20 watt chokes in parallel are suitable for running the 40 watt 2ft tube?.
I know some of You guys on here have used and recommended this , and Id like a bit of advice and to hear from any of You who have done this how successful it is , etc ?
I assume the 2 x parallel 2ft 20 watt chokes DO deliver the correct lamp current and voltage?? Also what electronic starter would You guys recommend for this . Im assuming something like an EFS120 ? , But Id like to hear from any of You who actually have a setup like this running and in use and know that it is correct and reliable, etc .
Thanks , Jeremy