(a) A main power shut-off switch or switches shall be installed in the remote control location and not more than seventy-five feet (75') from the dispensers.
(b) A fixed fire extinguisher system suitable for the extinguishment of Class B (flammable liquid) fires, acceptable to the authority having jurisdiction and covering the entire gasoline dispensing area, shall be installed at each self-service station. The system shall be capable of being activated, either manually or automatically; however, if it is to be activated manually, the triggering device should be in the remote control location not more than seventy-five feet (75') from the dispensers. Activation of the extinguishing system shall automatically cut off power to pump dispensing devices.
(2) As referred to above, "the entire gasoline dispensing area" is construed to mean that area encompassing the self service island. If, however, an adjacent attended island (normally serviced by a regular attendant dispensing motor fuel) is too close in proximity to the self service island in the opinion of the authority having jurisdiction, then a fixed fire protection system may be required there also. The extinguishing systems described in subsection (a) and (b)(1) shall have a device showing the condition of the system at all times. This system shall be maintained in accordance with standard practices.