Electrically illuminated signs operating at high or low voltage and high-voltage installations up to and including 5 kV to earth either for external or internal use. It does not include luminaires or exit signs operating at low voltage.

BS 559:1991
Original price was: $190.50.$95.00Current price is: $95.00.
Specification for electric signs and high-voltage luminous-discharge-tube installations
BSI Group , 02/28/1991
Pages: 20


