Generac Protector 15kW Diesel (RD01525)

Standby generator · Protector Series. Specs from the manufacturer page (checked 2026-10-26).

The Generac Protector 15kW Diesel (RD01525) is a diesel standby generator with 15,000 W running output and a 2.5 L engine. The page describes it as an automatic standby generator that restores power within seconds of an outage. It includes an Evolution controller, Mobile Link Wi-Fi monitoring, and a 5-year limited warranty.

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Key features

• 15,000 W running output
• 2.5 L engine, diesel fuel, 6.5 L (6.87 qt) oil capacity
• Evolution controller with a multilingual two-line LCD and color-coded, backlit buttons
• Quiet-Test mode runs the weekly self-test at a lower, quieter RPM
• Mobile Link Wi-Fi monitoring from a smartphone, tablet, or PC; standard on RD diesel models
• Isochronous governor with voltage regulation of +/- 1% and frequency regulation
• UL/CUL 142-listed double-walled base tank and UL/CUL 2200-listed generator
• Available in single- and three-phase configurations

What it is for

• residential standby backup power
• light commercial use

Specifications

From the Generac page. Values the manufacturer does not publish are left out.

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Connection and wiring

Follow the diagrams in the Generac manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.

Open the Generac manual (PDF) →

Error codes and troubleshooting

We found no error-code table in this manual. Its troubleshooting section is the reference.

FAQ