How Much Power Does a Reefer Trailer Use? Generators & Hookups
What electrical supply an electric-standby reefer needs — and when to use a generator.
Electric standby reefer trailers typically need 208/230V three-phase power, while smaller portable walk-in units may run on standard outlets. Confirm your supply before delivery to avoid a unit that cannot be powered.
What to check before delivery
- Available voltage and amperage at the placement point.
- Distance to the outlet (you may need a heavy-duty cord run).
- Whether a generator is needed for remote sites or outages.
If grid power is unavailable, a diesel unit or a generator-backed setup keeps the unit running — see electric standby vs diesel.
Frequently Asked Questions
What power does a reefer trailer need?
Larger electric-standby reefer trailers generally need 208/230V three-phase power, while smaller portable units can run on standard outlets. Diesel units run independently of grid power.
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