| 摘要 |
Pools and spas formed with lamp house accommodating wall conformations below normal water level are fitted with a flexible tubing lamp house containing special lamps having a safety conductor ending unconnected in the interior of the lamp envelope. The lamp energizing circuits and a grounding circuit connected to the safety conductors of the lamps are disposed in the lamp house with a water insoluable, light transmitting electrical insulating material which serves to insulate the circuits and exclude water.
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