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#9
August 21st 04, 07:41 AM
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Nobody looks it up. The 4522 lamp is usually used in a swing-down lamp. The
swing down lamp has a motor to drive the lamp up or down. The lamp is 12 volt, 250 watt, something the guesser at 9 amps (if for a 24 volt plane) would have realized if the system voltage of the plane had been given, so the current draw for the lamp along is a nominal 20 amps. If the motor circuit is not opened by the switch/relay built into the light, the combination of the lamp current and the motor current will pop the breaker every time, in a short time. Yes, check the amps with a current meter, and please do not let the motor run long in the test or it will burn out. Neal 
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