20 ft. 10/4 SOOW 30 Amp 4-prong Dryer Heavy-Duty NEMA 14-30 Extension Cord | eBay
AC WORKS® L14-30 Generator Power Extension Cord – AC Connectors
20 ft. 10/4 SOOW 30 Amp 4-prong Dryer Heavy-Duty NEMA 14-30 Extension Cord | eBay
Conntek NEMA L5-30 30A 125V Generator Extension Cord
NEMA L21-30 Extension Cord - 15ft 3 Phase, 30A/208V 10 AWG - Iron Box # IBX-5809 | eBay
Mastercraft 30-ft 12/3 Outdoor Extension Cord with Grounded Outlet, Lighted End and Locking Connector, Yellow | Canadian Tire
AC WORKS 25ft L6-30 Extension Cord at Lowes.com
Generator Power Cord Marine Shore Power Trailer Cord RV Generator Adapter - Conntek. 10-30 Extension Cords
Camco 30' 15-Amp Extension Cord | Ideal for RV, Mobile Home and Household Use | Heavy-Duty (55142), Black : Amazon.co.uk: DIY & Tools
Camco PowerGrip 30-Amp Camper/RV Extension Cord | Features a Durable Heat-Resistant PVC Construction with 10-Gauge Wires and a Flexible Design | Rated for 125 Volts/3750 Watts | 25-Feet (55191) : Amazon.co.uk: DIY
Master Extension cord 63A/10m for B 30, RS 40 heater | Dantherm Group
Mighty Cord A10-3010EH Red 10' 30A Extension Cord with Heavy Duty Cable (Boxed): Amazon.co.uk: Electronics & Photo
High Tide Marine 30 Amp - 100 ft Marine Shore Power Extension Cord (9506) | eBay
AC WORKS® 30A 125/250 Volt NEMA 14-30 4-Prong Dryer Extension Cord – AC Connectors