¶ APPENDIX J. ELECTRICAL CONNECTION OF SERVICE SWITCH/SERVICE DISCONNECT SWITCH WITH FREQUENCY CONVERTER.
A: Option 1.
• The frequency converter is located outside the fan chamber, e.g., in the control cabinet, on the wall, etc.
• The service switch is located on the fan chamber.
B: Option 2.
• The frequency converter is located directly on or inside the fan chamber.
• The service switch is located on the fan chamber.
C: Option 3.
• The service switch itself is on the fan chamber.