Description
xCircleCord 20-foot 4-prong 30A generator extension cord with a weatherproof inlet box lets you safely connect a portable generator to a home's transfer switch.
This heavy-duty kit includes a 20-foot, 10-gauge SJTW power cord (NEMA L14-30P to L14-30R) and a precut inlet box designed to speed installation without special tools. Built to ETL standards for 125/250V service and up to 7,500 watts, the assembly balances safety, durability and convenience for emergency power, construction sites, RV hookups, and seasonal events.
How does this cord and inlet box make generator hookups safer?
The twist-lock L14-30 connectors prevent accidental disconnection while the inlet box provides a dedicated feed to a manual transfer switch or inlet. ETL listing ensures the cord and connectors meet recognized safety benchmarks for residential and light-commercial use.
- Locking NEMA L14-30P male and L14-30R female for secure connections
- 10 AWG pure copper conductors for reliable current flow up to 30A
- ETL Listed components that meet electrical safety standards
- Inlet box isolates the connection point outside the structure
Will this setup withstand outdoor weather and heavy use?
The cord jacket is made from flame-retardant, UV- and heat-resistant PVC designed for SJTW outdoor use, resisting rain, snow, oil and abrasion. The inlet box features preinstalled rubber plugs over knockouts, simplifying installation while maintaining a weather-resistant seal.
- SJTW-rated jacket resists sun, moisture and temperature changes
- Pre-drilled rubber-plug knockouts remove without drilling or special tools
- Heavy-duty insulation reduces wear from rocks, soil and foot traffic
- Includes a storage bag and adjustable cord organizer to protect the cord between uses
How easy is installation and storage for non-professional users?
The inlet box arrives ready to mount with removable rubber plugs that replace knockouts, so you won't need a knockout punch or drill for many common installations. After use, the included storage bag and cord organizer keep the cable tidy and compact for garage or vehicle storage.
- Pre-drilled openings with rubber plugs for tool-free knockout removal
- Mountable inlet box for neat, code-friendly exterior feed points
- Compact storage bag and adjustable wrap prevent tangles and kinks
- 20-foot length balances reach and manageability for most generator locations
Who is this for? Homeowners who want a reliable, code-conscious way to route generator power to a manual transfer switch, contractors needing a durable temporary feed on job sites, RV owners who prefer a twist-lock connection, and anyone seeking a weather-resistant, ETL-listed 30A extension solution. If you need a mid-length, heavy-gauge extension with a user-friendly inlet box and secure locking connectors, this CircleCord kit is built to meet those needs without complex installation tools.
FAQ
Q: Is this cord safe for use with home transfer switches?
A: Yes. The kit uses NEMA L14-30 connectors and is ETL Listed for 125/250V service, suitable for manual transfer switch connections when installed per local electrical codes.
Q: Do I need special tools to prepare the inlet box?
A: No. The inlet box has rubber-plug knockouts you can remove by hand, so a drill or knockout punch is not required for standard installations.
Delivery & Returns
xFree UK delivery on every order — packed within 1 business day, arriving in 2–4 business days.
Free 30-day returns — email us for a prepaid label; refunds land within 3–5 business days of the return arriving.
Why GardenLuxe
x- ✓ Proven best-sellers only — products UK gardens buy again and again
- ✓ Free UK delivery on every order
- ✓ Free 30-day returns with prepaid label
- ✓ Genuine products from reputable suppliers
- ✓ Human support — gardenluxe.co.uk@gmail.com
Care & Good To Know
x- Rugs & mats: hose down or machine wash per label; air-dry fully before storing.
- Shade cloth: use every grommet, tension with bungee ties, take down for winter storms.
- Fertilisers & plant food: always follow label dose rates; store sealed, dry and away from children and pets.
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