You have a PDU or a piece of equipment with an L6-30P plug, and the L6-30R receptacle is just out of reach. Moving the receptacle means an electrician. Moving the rack means downtime. An extension cord is the fast fix, as long as it is built for 30 amps.
The Valiant Power L6-30P to L6-30R Extension Cord is made for exactly this: locking connectors on both ends and 10AWG copper all the way through.
Why 10AWG matters
Wire gauge decides how much current a cable can carry without overheating. The lower the number, the thicker the wire. For a 30A circuit, 10AWG is the gauge commonly used in building wiring, and it is what this cord uses. Thicker copper means less resistance, less heat, and less voltage drop over the length of the cord.
A thin extension cord on a 30A load is how cords get warm, jackets get soft, and connectors get damaged. If you are going to extend a 30A circuit, the cord should be as stout as the circuit.
Locking on both ends
Both connectors are twist-lock. The L6-30P end locks into the wall receptacle. The L6-30R end locks onto your device plug. Neither connection can be bumped loose by vibration or someone working in the rack, which matters in mining spaces where fans keep everything shaking.
Specs
| Connectors | NEMA L6-30P to L6-30R, twist-lock |
| Rating | 30A, 250V |
| Wire | 10AWG, 3-conductor, 100% copper |
| Lengths | 3 ft, 6.5 ft, 10 ft |
Picking a length
- 3 ft: you are just a little short. Keeps slack to almost nothing.
- 6.5 ft: the everyday choice for a rack a few feet from the receptacle.
- 10 ft: receptacle across an aisle or on a different wall.
Need something else? We can build a cable to a custom length. Email us with what you need.
Where people use it
- Connecting a PDU to a receptacle that is a few feet away
- Mining racks being rearranged or expanded
- Generators and temporary power setups with L6-30 connections
- Industrial and workshop equipment
Good practice with extension cords
- Use one extension, not two chained together.
- Keep the total load at or under 24A for continuous use (80% of 30A).
- Do not run it under rugs or through doorways where it can be crushed.
- If a connector ever feels hot, unplug and inspect it.
If the extension is going to stay in place permanently, it is worth having an electrician add a receptacle closer to the rack. An extension cord is the right tool when you need flexibility.
Frequently asked questions
Can I use this with a dryer?
No. It is not intended for residential dryer or household use, and dryer outlets use a different connector anyway.
Will it work with my generator?
If the generator has an L6-30R outlet and the load stays within 30A at 250V, yes.
Is it all copper?
Yes, 100% copper conductors.
Email support@valiantpowerco.com for custom lengths or questions. Or see the L6-30 Extension Cord.