Cummins/Onan P1700i — AC output measuring

Testing & diagnosis · Generator

For the Cummins/Onan P1700i, from the Cummins/Onan service manual.

Applies to: Cummins/Onan P1700i, Cummins/Onan EH09-2D engine

Procedure

Use a circuit with a load such as a hot plate or lamp with a power factor of 1.0.
Adjust the load and rpm.
Check that the voltage range is as specified at the rated amperage and rated rpm.

Tools required

AC voltmeter Amazon
AC ammeter Amazon
Frequency meter Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

120V/60Hz: 117-126 V; 230V/50Hz: 225-242 V; 240V/50Hz: 235-252 V

Source: Cummins/Onan 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.

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