In article ,
writes:
On 21 Mar,
Frank Erskine wrote:

I can't say I've ever encountered a 230v emergency lighting system;
only 48/50v ones. Even they're a bit large to be called "portable",
and they've always been "hard-wired" to the mains.

I've come across 240vDC emergency lighting, but it predated PAT testing, and
wasn't happy with any variety of lighting other than filament lights.

Most modern fluorescent electronic ballasts are specifically rated
for DC battery supplies too, typically 160-270V, but no startup
below 190V.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]