2-2-4-6 Aluminum Mobile Home Feeder Cable

Two #2 AWG aluminum hot conductors, one #4 AWG aluminum insulated neutral, and one #6 AWG aluminum insulated equipment grounding conductor. All four conductors are individually insulated, rated 600V.

A 4-conductor aluminum cable for feeding power from a service panel to a mobile or manufactured home. Standard configuration uses USE-2 or XHHW-2 insulation, both listed for direct burial and wet locations. The "four conductor, all insulated" construction sets it apart from standard SER, which usually has a bare ground.

The #2 AWG aluminum hots are rated 90A at 75°C per NEC 310.16. However, the reduced-size #4 neutral limits 2-2-4-6 to circuits with balanced loads where the neutral does not carry the full unbalanced current. Use 2-2-2-4 AL MHF instead when the neutral needs to carry the full load. Verify terminations are rated for aluminum conductors.

The sequence is: hot, hot, neutral, ground. 2-2-2-4 is two #2 hots, a #2 neutral, a #4 ground. 2-2-4-6 is two #2 hots, a #4 neutral, a #6 ground. The 2-2-4-6 costs less because the neutral and ground are smaller, but the smaller neutral limits it to circuits with balanced loads. 2-2-2-4 is the safer default for a full-load service or feeder.

Yes. The individual conductors inside standard MHF are USE-2 or XHHW-2, both listed for direct burial in wet locations. Follow NEC 300.5 for burial depth: 24 inches for direct-buried residential feeders under 600V, 18 inches under a concrete slab, and shallower depths where protected by conduit.

The conductors are typically USE-2 or XHHW-2, both listed to UL 854 for service entrance and UL 44 for the conductor insulation. USE-2 stands for Underground Service Entrance, and the -2 suffix means 90°C rated in wet locations. XHHW-2 is cross-linked polyethylene with the same 90°C wet rating. The outer jacket, when present, is PVC. Voltage rating is 600V.

Yes, and most customers do. MHF is commonly used for pole barn feeders, detached garage subpanels, hot tub circuits, small outbuildings, and RV pedestals. It works well outside its original purpose because all four conductors are insulated, the assembly is direct-burial rated, and aluminum keeps cost reasonable at feeder sizes. Whatever the destination, code still applies: NEC 250.32 requires a 4-wire feeder to a separate structure, and MHF is already 4-wire.

Yes, but the splice needs to be made inside a weatherproof, listed junction box using connectors rated for the conductor size and material. NEC 300.13 and 300.15 cover splice and box requirements. Direct-buried splices are allowed only if the connectors and covering are listed for direct burial. Most installations avoid buried splices by running a single continuous length.

Voltage drop, not ampacity, is the sizing limit at long distances. Rule of thumb for a 90A balanced load on 2-2-4-6 aluminum at 240V single phase, keeping voltage drop under 3%: about 115 to 140 ft. Beyond that, upsize the cable. Do the actual voltage-drop calculation for the specific load and run length before ordering.

At 90A balanced load, 240V single phase, on 2-2-4-6 aluminum, expected voltage drop is roughly 3% at 140 ft, 5% at 225 ft, and 7% at 315 ft. Standard practice keeps total voltage drop (feeder plus branch circuits) under 5%, with the feeder itself under 3%. Use a proper calculation with the actual load current before ordering.