40 FT NEMA L14-30P/L14-30R STW 10 AWG Generator Power Extension Cord Kit 30 Amp Twist Lock Connector Pre-Drilled Inlet Box RV
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30A 40FT Generator Cord & Power Inlet Box Kit — ETL Listed • Copper Conductors • Outdoor-Rated
Keep essentials running during outages with this professional 30 amp generator cord and power inlet box bundle. The 40 ft (≈12.2 m) cord uses pure copper conductors with a rugged PVC/STW jacket for reliable 125/250 V power delivery, while the ETL-listed inlet box features a flip cover with status light, rust-resistant housing, and quick, clean installation. Perfect for homes, RVs, and job sites facing rain, wind, or extreme temperatures.
Key Features & Benefits
- Stable 30A Backup Power: 125/250 V, 30 A rating supports transfer-switch circuits like lighting, refrigerators, sump pumps, and networking (within system capacity).
- 40 FT Heavy-Duty Reach: Extra length places generators safely away from living spaces while minimizing voltage drop via 10 AWG copper conductors (typ. 10/4 for 120/240 V).
- ETL Listed Components: Cord and inlet box independently evaluated for electrical safety and build quality.
- Outdoor-Ready: STW/PVC jacket resists abrasion, UV, and moisture; inlet box has a rust-resistant coating and weather-shedding flip cover.
- Power-Present Indicator: LED under the cover lets you verify live power in low-light conditions at a glance.
- Fast Install: Pre-drilled mounting holes and a detachable plug simplify mounting/wiring—no extra drilling required in most cases.
- Secure Connections: Generator cord ends use a self-locking twist-lock interface to resist loosening, dust, and splash intrusion.
- Tidy Storage: Includes a carry strap and storage bag for neat coils and protection between uses.
Technical Specifications
| Model Number(s) | D0100HRS2DX (Kit) / D0102HS0SR8 (Default Listing Ref.) |
| Cord Length | 40 ft (≈12.2 m) |
| Electrical Rating | 30 A • 125/250 V AC • 60 Hz |
| Conductor Gauge / Material | 10 AWG stranded pure copper (typ. 10/4 hot/hot/neutral/ground) |
| Jacket Type | STW / PVC — outdoor, UV, abrasion, and moisture resistant |
| Connector Standard | NEMA L14-30 twist-lock (male ↔ female) — verify against your generator/transfer switch |
| Inlet Box | Outdoor ETL-listed enclosure; flip cover with LED power indicator; corrosion-resistant finish |
| Mounting | Pre-drilled holes; detachable inlet plug for easier pull-through and terminations |
| Ingress/Use | Weather-resistant; keep terminations dry and elevated during use |
| Included Accessories | Carry strap • Storage/transport bag |
| Certifications | ETL Listed (cord and inlet box) |
Applications
- Home Backup: Feed a manual transfer switch or interlock for selected circuits during outages.
- RV & Mobile: Compatible with many 120/240 V 30 A portable generators (confirm receptacle type).
- Events & Jobsites: Temporary 120/240 V distribution for light equipment within 30 A limits.
Installation Notes
- Mount the inlet box on an exterior wall per local code; seal penetrations for weather-tightness.
- Confirm NEMA L14-30 compatibility for generator and transfer gear; torque terminations per manufacturer spec.
- Where required, use a licensed electrician and obtain inspection/approval from the AHJ.
Safety & Use
Do not exceed 30 A / 125–250 V. Fully uncoil the cord for high loads to reduce heat. Keep all connections dry and off the ground. Never back-feed a panel without an approved transfer device. Follow generator and switch manufacturer instructions and local codes.
What’s in the Box
- 30A, 40 ft generator extension cord (copper, outdoor-rated)
- Outdoor power inlet box with flip cover & LED indicator (ETL)
- Carry strap and storage/transport bag
- Pre-drilled mounting points and install guidance
Frequently Asked Questions (FAQs)
1) What plug/receptacle does the cord use?
It uses the NEMA L14-30 120/240 V, 30 A twist-lock standard (male to female). Verify your generator and transfer switch match L14-30.
2) Is the inlet box weatherproof?
Yes. It’s an outdoor-rated, ETL-listed enclosure with a flip cover and rust-resistant coating. Protect connections from standing water and direct spray.
3) Why copper instead of CCA?
Pure copper offers lower resistance and better heat performance, minimizing voltage drop on longer runs.
4) Will this power my whole house?
No. It’s intended to feed a manual transfer switch/interlock for selected circuits within 30 A and generator output limits.
5) How far from the house can I place the generator?
The 40 ft cord allows proper separation for exhaust/noise. Follow your generator’s manual for minimum outdoor clearances.
6) What does the LED indicate?
The cover-mounted LED confirms power presence at the inlet, simplifying checks in darkness.
7) Do I need a transfer switch?
Yes. Never back-feed a panel. Use an approved transfer switch or interlock installed per code to isolate from the utility.
8) Can I leave it connected outdoors?
Designed for temporary use. Disconnect and store when not in use; use the included bag and strap to protect the jacket from UV and abrasion.
9) Is the installation truly tool-free?
Pre-drilled holes and a detachable plug ease mounting and wiring, but proper terminations still require basic tools and electrical knowledge.
10) Will this work with my RV inlet?
Many RVs use different connectors (e.g., TT-30). Confirm your RV inlet type/rating; use only adapters rated for 30 A and the correct standard.
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