One ticks and the other sort of comes on slowly!
Brian

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"Andrew Gabriel" wrote in message
news
In article ,
writes:
On Tuesday, 19 June 2018 13:49:19 UTC+1, Chris wrote:
Hi all,

I have a run of 3x20W fluorescent under-cabinet slimline strip lights;
only the middle one of which is still working. I was about to replace
the
outer two when I read this warning at the bottom of the installation
sheet:

"These T5 luminaires must not be wired on the same circuit as standard
fluorescent fittings which use conventional low-loss magnetic ballasts."

How can I tell if the one remaining working one is of this type and is
it
really important? It's been there since before I bought the place so at
least 7 years old.

20W is not a standard T5 tube rating.
T5 HE and T5 HO tubes only run on electronic control gear.
However, since I don't know what your non-standard T5 tube is, I
can't be sure the same applies to that. The older T5 halophophate
range could run on magnetic ballasts, but they are rated 4,6,8,13W.

the only reason to avoid that I can think of is inductive kickback. It's
easy to tell magnetic from electronic ballasts, perhaps googling will
demonstrate.

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Andrew Gabriel
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