Midwest t1220 Terminal Box 200A 120/240V Single Phase

Product Description

The MIDWEST t1220 is a 200-amp, single-phase terminal box rated at 120/240 volts, designed for converting overhead electrical service to underground service and for multi-circuit wiring applications. Housed in a NEMA 3R enclosure measuring 14 inches wide by 21 inches tall, it protects all internal terminations from weather and contaminants. The enclosure supports wire ranges of three conductors from 1/0 to 250 kcmil and three conductors from 12 AWG to 1/0 AWG. Hub provisions are included for conduit entry. Rated at 10,000 AIC, the t1220 carries UL/CUL certification. Licensed electricians handle installation in both residential and commercial settings.

The t1220 is suited for overhead-to-underground service conversions and general multi-circuit wiring tasks. Typical applications include inter-building wiring on agricultural properties, industrial wire splicing, and commercial construction projects. The NEMA 3R rating qualifies it for indoor and outdoor installations where rain and ice protection is required. Its terminal arrangement provides a straightforward, time-saving means of making wire splices and connections in a protected, code-compliant enclosure.

Key Features

• 200-amp capacity rated at 120/240 volts single phase
• NEMA 3R enclosure rated for indoor and outdoor use
• Accepts wire ranges of three conductors 1/0 to 250 kcmil and three conductors 12 AWG to 1/0 AWG
• 10,000 AIC interrupting rating
• Hub provisions included for conduit termination
• UL/CUL certified construction

Compatibility

Designed as an OEM-style replacement and new-install terminal box for 120/240-volt single-phase overhead-to-underground service conversion and multi-circuit wiring applications in residential, agricultural, industrial, and commercial construction.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Disconnect and lock out all power sources before opening any existing service or splicing conductors into the terminal box. Verify conduit hub sizing and conductor fill calculations prior to pulling wire. Secure the enclosure to a suitable structural surface to maintain the NEMA 3R weatherproof integrity of the installation.

Technical Specifications

• Amperage: 200 amps
• Voltage: 120/240 volts
• Phase: Single phase
• AIC Rating: 10,000 AIC
• Enclosure Type: NEMA 3R
• Cabinet Size: 14 inches wide x 21 inches tall
• Wire Range: (3) 1/0 to 250 kcmil, (3) 12 AWG to 1/0 AWG
• Hub Provision: Yes
• Weight: 19 pounds
• Certification: UL/CUL

Standard Information

• Brand: MIDWEST
• Manufacturer Part Number: t1220