Power Input Panel - Tap Box - Inlet Box
Three-Phase 800A
MTC 6003 IES8KvB

Supporting up to 800 Amps, Roam's MTC® 6003 IES8KvB series ("v" = Voltage Code) of Power Input Panels provides a rugged and cost-effective, exterior connection point for temporary power input to trailers, buses, or temporary structures. Roam's 800A Power Input Panels use E1016 (J-Series/16 Series) Male Cam-Lok* brand connectors in two rows of 400A (max) connectors bus-barred together allows the panel to support up to 800A.

The standard in safety and outdoor reliability, Roam's line of Power Input Panels (also known as Tap Boxes or Inlet Boxes) makes connecting a temporary power input to line power output from a building fast, easy, and most importantly—safe. The MTC 6003 IES8KvB line is part of Roam's UL Listed (US & Canada) MTC 6003 series of three-phase Power Input Panels. Roam uses genuine Cooper Crouse-Hinds Cam-Lok* brand connectors. Similar compatible connectors are sometimes referred to as "Cam-Lock" connectors by their manufacturers, distributors, and/or users.

  • Corrosion-resistant powder coating
  • UV-resistant four color labels
  • Built to NEMA 3R standard
  • Internal and external grounding studs
  • Ten Crouse-Hinds E1016 Cam-Lok connectors
  • Three-phase power
  • 240 VAC, 480 VAC, & 600 VAC rated panels
  • Spot-welded Aluminum construction
  • Custom labels & configurations available
  • Brown-Orange-Yellow connectors at 480VAC


Roam's MTC 6003 IES8KvB 800A Power Input Boxes accept either #2 to 2/0 or 2/0 to 4/0 cables via Cam-Lock plugs on the generator cable side, and from #2 AWG to 600MCM cables on the internal wireway side. The wireway connection supports up to dual 600MCM cables (via bolted on lugs) on internal bus bars.

Voltages up to 600VAC

Roam offers the MTC 6003 IES8KvB Power Input Panel in models that support up to 240 VAC (120v, 208v, 230v, 240v)—MTC 6003 IES8K2B, up to 480 VAC (277v, 330v, 440v, 480v)—MTC 6003 IES8K4B-BOY, and up to 600 VAC (575v, 577v, 600v)—MTC 6003 IES8K6B. All of the 800A panels are UL Listed and cUL Listed (Canada) at those voltage levels. Brown-Orange-Yellow color coding (for labels, Cam-Locks, & Cam-Lock spring caps) is normally used for most 480 VAC applications.


For all 800A power input panels, it is vital that the panel be fed only from a single generator or power source or from multiple generators or power sources that are synchronized. Do not connect multiple power sources or generators to this panel unless all power inputs have been synchronized. Failure to properly synchronize (phase match and voltage match) inputs from multiple power sources or generators can cause short circuits, severe equipment damage, and and potential injury to operators. Additionally, all power input cables should be of same cable type, conductor material, gauge, and length.

Canadian Color Coding Available

Any Roam panels with power connectors normally color coded (for Cam-Locks, Spring Caps, and Labels) as L1=Black, L2=Red, & L3=Blue, are also available in the typical Canadian color coding format of L1=Red, L2=Black, & L3=Blue. If you need to order a unit with the Canadian color scheme, just add a "-CAN" to the end of the Model Number. If you are connecting the Power Input Panel to a power source that uses the US color coding (L1 = Black, L2 = Red, L3 = Blue), then you may want the standard US color coding (so long as local electrical codes allow).

No Neutral Options Available

Roam's 800 Amp Power Input Panels (Boxes) can also be ordered with no neutral connection for site and generator configurations designed for just Ground, L1, L2, and L3 cables. The "No Neutral" versions of these panels are also UL Listed and cUL Listed (Canada). To order a panel without a neutral connector just add a "-NN" to the end of the Model Number. The "No Neutral" panels used only eight sets of four bus-barred Cam-Lock connectors rather than ten.

Model Numbers & Options

Base Model Number Up to 240VAC Up to 480VAC Up to 600VAC No Neutral Connector
MTC 6003 IES8KvB MTC 6003 IES8K2B MTC 6003 IES8K4B-BOY MTC 6003 IES8K6B MTC 6003 IES8KvB-NN

The "v" in the part number represents a code of either 2 (for up to 240 VAC panels), 4 (for up to 480 VAC panels), or 6 (for up to 600 VAC panels).

UL-cUL Listed Logo

UL 1008 Listed—US & Canada