EXCELFU 30A 125V NEMA TT-30R RV/EV Outlet Box — Lockable Type 3R Rainproof Iron Enclosure

EXCELFU 30 Amp 125 Volt NEMA TT-30R outlet box provides a weatherproof, lockable connection point to power and test your RV or 30A equipment safely at home or in a driveway.

Keep your RV charged and ready with a purpose-built outdoor receptacle designed for 30A, 125V NEMA TT-30 plugs. Built from heavy-gauge iron and housed in a type 3R rainproof enclosure, this ETL-listed box makes it simple to bring shore power to your camper, test appliances, or operate rooftop air conditioning before you hit the road.

How does this outlet box protect my equipment outdoors?

The enclosure is constructed from durable iron and rated type 3R for rainproof performance, shielding the NEMA TT-30R receptacle from rain, snow, UV and dust. A spring-action swing cover keeps the plug area protected while the internal cavity leaves room for wiring and strain relief.

• Heavy-gauge iron body for impact and corrosion resistance
• Type 3R rainproof enclosure blocks moisture and dust
• Swing cover protects the plug when not in use and holds open during connection
• ETL-listed componentry for verified safety standards

Can I lock the box to prevent tampering or theft?

Yes — the front door is designed to accept a lock so you can secure the receptacle and wiring from unauthorized disconnection. Locking the lid helps prevent power theft and discourages tampering, improving safety for families and parked vehicles.

• Lock-ready door secures the outlet and cable connections
• Reduces risk of unauthorized power use or accidental unplugging
• Added protection helps prevent exposure of live terminals to children

What wiring and installation options are available?

The box supports both inside and outside mounting and provides multiple entry points for wiring. Marked circles on the side and back indicate where to drill with a hole saw; pre-cut holes are not provided, giving you flexibility to position entries for neat routing and strain relief.

• Multiple sides available for cable entry to match your setup
• Drill-and-hole-saw approach for clean, custom openings
• Spacious interior for heavy-gauge wire and secure terminations
• Front lid stays upright while you work, simplifying wiring tasks

Will this outlet work with my RV and 30A cords?

The NEMA TT-30R receptacle is the standard 30A RV connector used on most North American campers and many portable generators. The box is sized so a typical 30A RV cord with a large handle can be plugged in without obstructing the door’s closure or the swing cover function.

• Standard NEMA TT-30R fits common 30A RV power cords
• Room for large plug handles while maintaining weather protection
• Compatible for powering RV appliances and pre-trip testing

Who is this for: This EXCELFU outlet box is ideal for RV owners, small property managers, and DIYers who need a reliable, lockable 30A power point at home, in a driveway, or at a private campsite. It suits anyone wanting a durable outdoor-rated receptacle to safely run air conditioners, test onboard systems, or provide temporary power to 30A equipment with the convenience and protection of a weatherproof, ETL-listed enclosure.