"B A R R Y" wrote in message
et...
Mxsmanic wrote:
From what I understand, icing protection should be turned on if the
outside temperature is 5° C or less. However, what is the reason for
not having it on all the time?

Some ice protection equipment uses a fluid that is of limited quantity
on-board, not to mention that it costs money.

He can always pause and go to the fridge for more fluids.

Other ice protection devices can put a drain on a smaller aircraft's
power.

He's running on 220VAC. Sholdn't be an issue.