Wattstanding
Reliance PC3040 40-Foot 30-Amp 120/240-Volt Power Cord

Product image: Reliance Controls

Generator hookup gear · Reliance Controls

Reliance PC3040 40-Foot 30-Amp 120/240-Volt Power Cord

Reliance Controls · generator cord · 30 A

The short answer

The Reliance PC3040 40-Foot 30-Amp 120/240-Volt Power Cord is a generator cord rated 30 A. DuroMax lists it at $120. It must be installed and used according to local electrical code; a licensed electrician decides whether it is right for your home.

Type
Generator cord
Amperage
30 A
Length
40 ft
Price seen
$120

Good fit if

  • The connectors and amperage match both your generator and the equipment at the other end

Look elsewhere if

  • The ratings or plug types differ from what you have — do not force an adapter
$119.99DuroMax listed price (base model) · seen 30 Sep 2026
View at DuroMax

Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure

What a generator cord does

A generator power cord carries a generator's output to an inlet box or a single appliance. Its connector types and amperage must match both ends.

Power at this amperage
VoltageMaximum watts (amps × volts)Plan for about 80% continuous
120 V3,600 W2,880 W
240 V7,200 W5,760 W
Wattstanding calculationWattstanding calculation — watts = amps × volts. Electrical practice commonly limits continuous loads to about 80% of a circuit's rating; your electrician applies the code that governs your home.

Generators in our catalog with a matching listed outlet

A matching outlet is necessary but not sufficient: the generator's watts, the inlet, the cord and the panel all have to be correct. An electrician confirms the whole chain.

Safety and installation

SafetyNever plug a generator or battery system into a wall outlet to power the house ("backfeeding"): it can send electricity back into the utility lines and injure line workers, and it can start fires. Connecting a generator to a home's wiring is a job for a licensed electrician, with the permit and inspection your local code requires. Wattstanding does not give wiring instructions.

Compare this with other equipment in the transfer switch library or use the compatibility matrix.

Fit check before you buy

This equipment connects to a home's wiring, so every check below belongs to a qualified person.

✓ Required? Check firsti Good to know
  • ✓Licensed electricianInstallation, permit and inspection are the electrician's and your local authority's job.
  • ?Matching amperageThis item is rated 30 A; the generator outlet, cord and inlet need to match.
  • ?Panel fitConfirm it works with your panel brand and model.
  • iUtility rulesSome utilities and areas have their own rules for generator connections.

Specifications

Each figure is labelled with where it comes from. Numbered references link to the source list below.

Manufacturer storeRetailer listingWattstanding calculationNot verified

Published specifications

Typegenerator cord[S1]Retailer listing
Amperage30 A[S1]Retailer listing
Length40 ft[S1]Retailer listing

Wattstanding calculations

Maximum watts at 240 V7,200 WWattstanding calculation
Maximum watts at 120 V3,600 WWattstanding calculation

Limitations to weigh

  • Specifications are the maker's or seller's; Wattstanding has not tested this product and gives no installation instructions.
  • Whether it is allowed or suitable for your home is for a licensed electrician and your local authority.
  • Prices change; confirm the price, stock and what is included before ordering.

Alternatives worth comparing

WEN PC1420F 125V/250V 30-Amp 10-Gauge Flattened Under-Door Generator Extension Cord Splitter30 A; $20 less
Reliance PC3020K 20-Foot 20/30-Amp Outdoor Power Cord Kit30 A; $25 less
DuroMax 30-Amp 25-Foot 10-Gauge L14-30 Heavy Duty Generator Power Cord for Home Power Backup (XP3025GC)30 A; $40 less
EcoFlow 50 Amp NEMA 14-50P TO SS2-50R Generator Cord (15 Feet)50 A; $9 more

Where to buy

Our link opens this exact product page. Prices and stock change; check before you order.

$119.99DuroMax listed price (base model) · seen 30 Sep 2026
View at DuroMax

Every link opens the product page for this exact model. We may earn a commission; it never changes what we publish. Disclosure

Questions buyers ask

Do I need an electrician to install the Reliance PC3040 40-Foot 30-Amp 120/240-Volt Power Cord?
For anything that connects to a home's wiring — yes. Use a licensed electrician and get the permit and inspection your area requires.
Where can I buy the Reliance PC3040 40-Foot 30-Amp 120/240-Volt Power Cord?
1 seller list it: DuroMax.

Sources and verification

  1. DuroMax — Reliance PC3040 40-Foot 30-Amp 120/240-Volt Power Cord — product page and specifications Retrieved 30 Sep 2026

Wattstanding has not tested this product hands-on. This reference is compiled from the sources above; our calculations are labelled and show their working. Electrical work belongs to a licensed electrician. Last verified 30 Sep 2026. How we work