TM 10-6640-215-13 2-2. OPERATOR CONTROLS AND INDICATORS - continued. Table 2-2.  Main Power Panel - Continued Control or Indicator Function A1CB12 Provides 20A circuit protection for BURNOUT FURNACE. A1CB13 Provides   15A   circuit   protection   for   lighting,   phase   C. (Blackout lights and three overhead lights just forward of rear door.) A1CB14 Provides 15A circuit protection for the SUMP PUMP. A1CB15 Provides 30A circuit protection for OXIDATION STABILITY BATH. A1CB16 Provides  15A  circuit  protection  for  UTILITY  No.  5  and the RVP bath. A1CB17 Provides 15A circuit protection for WATER HEATER. A1CB18 Provides 30A circuit protection for GUM BATH. A1CB19 Provides 15A circuit protection for STEAM SUPERHEATER. A1CB20 Provides    15A    circuit    protection    for    FUME    HOOD UTILITY receptacle. A1CB21 Provides 20A circuit protection for outside receptacle. A1CB22 Provides 15A circuit protection for GAS ALARM control unit. 2-5