TM 10-6640-233-10 Table 2-2. Main Power Panel (cont.) Control or Indicator Function 6.  Circuit Breaker 6 Provides circuit protection for the Computer Duct Heater. 7.  Circuit Breaker 7 Provides circuit breaker protection for Environ- mental Duct Heater. 8.  Circuit Breaker 8 Provides power to Panelboard No.2. 9.  Circuit Breaker 9 Provides circuit breaker protection for Computer Power Regulator. 10.  Circuit Breaker IO Provides circuit breaker protection for Fume Hood Light and Blower. 11.  Circuit Breaker 11 Provides circuit breaker protection for Vacuum Pump. 12.  Circuit Breaker 12 Provides circuit breaker protection for Utility No. I and Emergency Light No. 3. 13.  Circuit Breaker 13 Provides circuit breaker protection for Lights. 14.  Circuit Breaker 14 Provides circuit breaker protection for Water Pump. 15.  Circuit Breaker 15 Provides circuit breaker protection for Emer- gency Lights No. 1 and 2. 16.  Circuit Breaker 16 Provides circuit breaker protection for Fume Hood Utility Receptacle. 17.  Circuit Breaker 17 Provides circuit breaker protection for Oven. 18. Circuit Breaker 18 Provides circuit breaker protection for Cable Reel. 19.  Circuit Breaker 19 Provides circuit breaker protection for Micro- scope and Ferrograph. 20.  Circuit Breaker 20 Provides circuit breaker protection for Air Com- pressor. 21.  Circuit Breaker 21 Serves as a spare circuit breaker. 22.  Circuit Breaker 22 Provides circuit breaker protection for the Spec- trometer. 23.  Circuit Breaker 23 Serves as a spare circuit breaker. 24