Komatsu PC118MR-8 Operation And Maintenance Manual page 187

FUNCTIONING
SUPPLEMENTARY POWER SUPPLY
A power socket is located in the rear panel of the operator seat.
To use this socket, remove the cap.
After use, replace the cap.
Use this outlet only when the engine is working.
For 24V devices, do not exceed 240W (equivalent to 10A).
If you intend to install devices with higher power ratings,
contact your Komatsu Distributor.
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