When to use expensive switches
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What's the $1.61 difference?
More expensive switches are necessary for the larger power demands caused by multiple lights or large motors.
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Inside the switches
Switch heavy loads with the $2 switch.
The contact area is twice that of the 39¢
switch, and the spring arm is heavier, so
you'll replace them less often.
Home centers sell 15-amp light switches for 39¢ in bins, and
15-amp switches in boxes for $2. They'll both do the job, but the $2
switch has a beefier spring arm and
larger contact surfaces. If
you're just switching a few room lights,
the 39¢ switches work fine and will
last a long time. But if you're switching
10 or 15 recessed lights or a large motor
(like a ventilation fan), or the switch
gets used dozens of times a day, pick
the $2 switches.
They'll last longer.