Generac — Connecting Power Source and Generator Power Supply
Installation · Transfer mechanism terminal lugs
From a Generac service manual covering: RTSC400A3, RTSW300A3, RTSW400A3. Check it applies to your exact model before use.
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Before you start
- Electrocution. Turn utility and emergency power supplies to OFF before connecting power source and load lines.
Procedure
- Connect utility (normal) power source cables to utility service disconnect circuit breaker if equipped, or N1 and N2 lugs.
- Connect generator to the generator terminals (E1 and E2) on the transfer mechanism.
- Connect customer LOAD leads to switch terminals T1, T2.
- Tighten terminal lugs to the torque values noted on the decal inside the door.
- After tightening, wipe away any excess corrosion inhibitor.
Specs & values
- Conductor torque: 375 in-lbs (42.4 Nm)
- Conductor size range: (1) #4-600 MCM (Cu/Al) or (2) 1/0-250 MCM (Cu/Al)
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.