On Mar 23, 6:05 pm, Doug White wrote:
The unit has two LEDs to indicate the condition of the device. I am
goign to call Leviton support tomorrow to try to get more info. They
don't have teh mnaul/instructions on-line.

Those lights only report a failure that must not happen if the
protector is properly sized. Normal failure mode for any protector
means it only degrades. Those lights do not report that normal
failure mode.

For most any location, a 50,000 amp protector will last at least ten
years - in most cases many decades longer. If your neighborhood has a
high number of failures, then a 100,000 amp protector will
exponentially increase that protector life expectancy. And will
significantly decrease its clamping voltages.

Of course, a most critical part is the only part that actually
provides protection. That is the earth ground. Every protection
layer is defined by the only 'system' component that provides
protection. Earth ground. How to make that 'whole house' protector
more effective? Upgrade the earthing. Every protector is only as
effective as its earth ground. Single point earthing with a
connection as short as possible, no sharp wire bends, ground wire
separated from other non-grounding wires, wire not inside metallic
conduit, etc. All essential to permit a protector to earth direct
lightning strikes without damage – even to the protector.