Do I have to drain the swimming pool to change the under water light bulb?
In 99 swimming pools out of a hundred, the under water bulb can be changed with the swimming pool full. The lamp assembly is screwed or clipped into a housing fixed to the swimming pool wall and, when unclipped or unscrewed, will reach the top of the swimming pool on an umbilical cable. Once the waterproof assembly is on the patio it can be simply unscrewed, the old bulb and o ring removed, the terminals cleaned, the new bulb and o ring fitted and the assembly screwed back together. The excess cable is then wound round the assembly as it is lowered back into the swimming pool and is clipped or screwed back into its mounting in the swimming pool wall. Check the deck box terminals. The deck box is a small plastic or metal junction box on the patio above the light which houses the joint between the cable coming up through a conduit from the light and the cable coming from the transformer (most under water pool lights are 12 volts to eliminate any danger if in contact with the water). This
