Cummins/Onan — Sine wave filter installation
Installation
From a Cummins/Onan owner's manual — check it applies to your exact model before use.
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Procedure
- Locate the filter near the Instapac so the 3 interconnecting wires may be conveniently run. Be sure the ambient temperature is below 140°F.
- Remove the black wire in the Instapac control box and install #16 or larger wire from terminal 2, 3, or 4 of TB2 to the filter IN terminal.
- Install wire from the transfer relay or automatic by-pass relay (terminal from which black wire was removed) to filter OUT terminal.
- Install wire from Neutral on TB1 to the filter C terminal.
Specs & values
- Ambient temperature below 140°F
- Wire #16 or larger
Source: Cummins/Onan owner's 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.