Generator Cord 40 ft, 50 A, NEMA 14-50P to Bare Wire | 6/3 + 8/1 STW, Hardwire to Transfer Switch or Panel | EXT-GEN50-40BW
Shipping calculated at checkout
SKU: EXT-GEN50-40BW
Only 13 in stock
Open here
50A Generator Cord — 40 ft • NEMA 14-50P to Bare Wire • STW 6/3 + 8/1 • 100% Copper
Extend high-current 240 V power safely from your generator to a transfer device with this 40 ft, 50A generator cord. Built on STW 6 AWG / 3C + 8 AWG / 1C stranded pure copper conductors, the cord terminates in a NEMA 14-50P straight-blade plug (generator side) and prepared bare-wire tails (installation side) for hardwiring into a power inlet box, manual transfer switch, or interlock kit per code. A rugged, weather-resistant jacket delivers dependable performance across job sites, homes, and RV pads.
Key Features & Benefits
- 50A / 12.5 kW Capacity: Rated 125/250 V AC, 50 A (up to 12,500 W at 250 V) for heavy-duty backup power applications.
- Premium Copper Build: Low-resistance 6/3 + 8/1 construction minimizes voltage drop and heat on long runs.
- STW Outdoor Jacket: Service-grade, weather/UV/abrasion-resistant sheath stands up to rain, sun, and handling.
- Ready-to-Wire Tails: Bare wire end simplifies connection to inlet boxes or transfer equipment (use proper strain relief and lugs).
- Cold-Flex Performance: Operates reliably from −40 °F to 140 °F (−40 °C to 60 °C).
- Ergonomic Plug Grip & Storage Strap: Easy-grip handle aids safe connect/disconnect; included strap keeps coils neat.
Technical Specifications
| Model Number(s) | D0100HRSI8X (Assembly) / D0102HS0AA8 (40 ft Listing Ref.) |
| Configuration | NEMA 14-50P straight-blade plug → Bare wire tails (for hardwire) |
| Conductor Make-up | STW 6 AWG / 3C (Hot L1 / Hot L2 / Neutral) + 8 AWG / 1C (Ground); stranded copper |
| Electrical Rating | 125/250 V AC • 50 A • up to 12,500 W |
| Length | 40 ft (≈ 12.2 m) |
| Jacket Type | STW — weather / UV / abrasion resistant |
| Ingress / Use | Outdoor-capable; keep terminations dry and elevated (IP44 typical for connectors) |
| Operating Temperature | −40 °F to 140 °F (−40 °C to 60 °C) |
| Included | Generator extension cord (14-50P → bare wire); storage strap |
Applications
- Home Backup Power: Hardwire to a manual transfer switch or inlet box (per local code).
- Mobile / Jobsite: Temporary 240 V distribution where a 14-50 generator receptacle is available.
- RV / EV Infrastructure: Use to feed a properly rated inlet or subpanel; for direct extensions to equipment, choose a 14-50P to 14-50R cord instead.
Safety & Installation Notes
- Connection of the bare-wire end must be performed by a qualified electrician using correct lugs/straps and enclosure strain relief.
- Confirm neutral/ground separation at the transfer equipment; follow manufacturer torque specs and local electrical code.
- Fully uncoil the cord under high load to reduce heat buildup. Keep all connections off the ground and away from standing water.
What’s in the Box
- 50A, 40 ft generator cord — 14-50P plug to bare wire
- Adjustable storage/organizer strap
Frequently Asked Questions (FAQs)
1) What does “6/3 + 8/1” mean?
Three 6 AWG copper conductors carry L1, L2, and Neutral; one 8 AWG copper conductor is Ground — the standard build for many 14-50 cords.
2) Is the plug twist-lock?
No. NEMA 14-50 is a straight-blade standard. If you need twist-lock for generators, look for L14-30 or L14-50 variants.
3) Can I wire this directly to my panel?
Do not back-feed a panel. Use an approved transfer switch or interlock installed per code by a licensed electrician.
4) Will this work with a power inlet box?
Yes. The bare-wire end is intended to hardwire into a properly rated inlet box or transfer device. Use correct lugs and strain relief.
5) Is it okay for outdoor use?
Yes. The STW jacket is outdoor-capable. Keep terminations dry/elevated and protect from direct spray or standing water.
6) What breaker size should I use?
Follow your generator and transfer equipment specifications. The cord itself is rated 50 A; upstream overcurrent protection must comply with code.
7) Can I use this to directly power an RV or EVSE?
Not directly. This cord ends in bare wires for hardwiring. For direct connections, choose a 14-50P to 14-50R extension cord.
8) How long are the wire tails?
Wire tails are prepared for termination; trim/strip to suit your lugs and enclosure. Always maintain correct color coding (L1, L2, Neutral, Ground).
9) What’s the temperature rating?
Service range is −40 °F to 140 °F (−40 °C to 60 °C), suitable for most climates.
10) Does it include a receptacle end?
No—the load end is bare wire for hardwire installs. If you need a receptacle, consider a 14-50R version or use a rated inlet box.
SEO-Optimized Keywords
50A generator cord 40 ft, NEMA 14-50P to bare wire cable, STW 6/3 + 8/1 copper generator extension, 240V 50 amp transfer switch cord, 14-50 generator power cable, heavy duty 12.5 kW extension lead, outdoor 50A generator inlet cord.
Why Pros Buy Direct from Conversions Tech
Engineered in the USA. Our U.S.-based engineering team designs and specifies our core product lines, and every product we carry — designed in-house or built to our exact specifications by certified partner factories — is quality-verified before it ships. UL/CSA listed where required, NEC compliant.
Cross-reference savings. Direct equivalents to Burndy, Hubbell, and other OEM part numbers at up to 30% less — same specs, same certifications, without the big-brand markup.
Real technical support. Need a torque spec, die reference, or an OEM quote? You’ll speak directly with the Conversions Tech engineering desk — not a script reader — for instant answers, custom kitting, and private-label options.
Fast US fulfillment. Orders in by 2PM ET ship same day from our US warehouse, nationwide ground and expedited.
