Dear Customer the Requirements for installing flood lighting above a body of water is that it is installed at least 2.5m away from the water body. This means 2.5m in any direction away from the pool. It has been told by the client not to change anything with the roofing of the building so this rules out the idea of installing the flood lighting in the roof as the roof is 2.4m away from the pool.

SELV stands for Safety Extra Low Voltage and PELV stands for Protected Extra Low Voltage. SELV is quoted as "an electrical system in which the voltage cannot exceed ELV under normal conditions, and under single-fault conditions, including earth faults in other circuits". Many people know SELV as Separated Extra Low Voltage but the BS EN 60335 refers it as “Safety Extra Low Voltage Any SELV circuit must contain;