TM  9-6115-669-13&P 2.7.6  External  connections. 2.7.6.1  External  loads. During  operation,  external  loads  can  be  connected  to  the  connection  panels  of  the  Generator  Set  150 kW  and  EPP  III  PDU  (figure  2-23).  This  requires  appropriate  circuit  breakers  of  the  internal  power sources  are  switched  on. Item Receptacle Number 1 J1/120  V  400  Hz  double  receptacle 2 J2/24  V  receptacle 3 J11  120  V  400  Hz  double  receptacle 4 J12  24  V  receptacle 2.7.6.2  Battery  connection Loads Circuit breaker 16 A maximum F11  (paragraph  2.1.2) 6 A maximum F2   (paragraph   2.1.2) 16 A maximum F8   (paragraph   2.2.2) 6 A maximum F2   (paragraph   2.2.2) Battery connection between the two generator battery sets can be made, if the battery of one generator set fails or is not present. Figure 2-4 Receptacle J3  SLAVE  RECEPTACLE  24 VOLTS Loads Connection 500 A maximum Battery  cable 2.7.6.3  Voice  communication. Voice  communication  is  possible  between  the  ECS  and  EPP  III  at  any  time,  even  when  shut  down generator  sets  150  kW  (figure  2-23).  Connection  from  EPP  III  to  ECS  can  be  made  by  using  the control  cable  and  two  headsets. Item Receptacle Connection Number Figure 2-12 5 J7-PHONE  JACK  receptacle Headset 6 J5-CONTROL   receptacle Control   cable   (table 1-5) N.I. Corresponding  receptacle  at  the  ECS  end Control   cable   (table 1-5) N.I. Corresponding  receptacle  at  the  ECS  end Headset 2  -  59