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Terry Terry is offline
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Posts: 663
Default Fluorescent amperage

On 7 Oct 2006 10:39:25 -0700, "Father Haskell"
wrote:

How much current is drained by a 2x 40 watt T12 magnetic ballasted
shop light trough at peak current draw? I assume this is at startup,
while trying to saturate the transformer and ignite the tubes. How
much is drawn once the lights are running?


I don't know


Short version: How many such fixtures (too cheap to replace
the old ones) can be run on a 15 amp circuit?


15A x 120V = 1800W
You can only use 80% 1800W x 0.8 = 1400W
(2x40) = 80W per fixture
1400W / 80W = 18

18