Electrical & Wiring · My build kit

SELTERM 4/0-AWG 5/16-Inch Cable Lugs

This SELTERM purchase belongs with the largest cable size in my kit. I keep its 5/16-inch stud hole explicit so it remains distinguishable from the other 4/0 lug purchase.

By · Camper Van Freedom

Read my build notes ↓

The Item in My Kit

I bought SELTERM 4/0-AWG 5/16-Inch Cable Lugs as part of my camper van equipment.

This SELTERM purchase belongs with the largest cable size in my kit. I keep its 5/16-inch stud hole explicit so it remains distinguishable from the other 4/0 lug purchase.

Comparing a Large Cable Barrel with Two Stud Openings

  1. My large-cable purchases and ring terminals were recorded separately.
  2. I kept both cable size and stud-hole size in each lug identity.
  3. This SELTERM ten-pack pairs four-aught barrels with five-sixteenths-inch holes.
A grouped roof-wire connection before the final conduit work.
A grouped roof-wire connection before the final conduit work.
The larger roof enclosure during my cable-entry work.
The larger roof enclosure during my cable-entry work.

My Takeaway from This Job

The lug-and-tubing alternative keeps that size combination and adds sleeves. Ancor retains four-aught cable barrels but changes the stud opening to three-eighths inch, so the hole size remains explicit in the comparison.

A matching cable-size label can still accompany a different stud hole.

Product Details And Van-Build Uses

SpecificationProduct Detail
Cable Barrel4/0 AWG
Stud Hole5/16 inch
BodyTinned copper ring lug

A cable lug has two sizes to identify: the barrel for the cable and the ring hole for the stud. Here the combination is 4/0 AWG and a five-sixteenths-inch hole. Keep both values with the cable-end label and the terminal drawing. In a van equipment-board layout, the flat ring and cable bend occupy more space than the stud alone. The linked SELTERM dimensional reference distinguishes this tinned version from bare-copper and different-hole variants.

Manufacturer Product Reference

Download SELTERM MD4056P Technical Drawing (PDF)

Related Build-Kit Reference: SELTERM 4/0-Xl 3/8-Inch Cable Lugs

Which Two Sizes Identify This Lug?

Use the cable-barrel size and stud-hole size together: 4/0 AWG and 5/16 inch.

Alternative products

Two Alternatives to Compare

The twelve-lug alternative keeps the 4/0 and 5/16-inch combination and adds tubing, while the Ancor 4/0 alternative uses a 3/8-inch stud opening.

ProductWhat distinguishes itPurchase link
SELTERM 4/0-AWG 5/16-Inch Cable Lugs, Ten-PackTen four-aught tinned copper lugs with five-sixteenths-inch holesView on Amazon
4/0-AWG 5/16-Inch Lug and Tubing Set (alternative)Four-aught five-sixteenths-inch lugs grouped with tubingView on Amazon
Ancor 4/0-AWG 3/8-Inch Cable Lugs (alternative)Four-aught Ancor lugs with three-eighths-inch holesView on Amazon
4/0-AWG 5/16-Inch Lug and Tubing Set

4/0-AWG 5/16-Inch Lug and Tubing Set

This set pairs copper ring lugs with heat-shrink sleeves. The lugs have 4/0-AWG barrels and 5/16-inch stud openings.

View on Amazon
Ancor 4/0-AWG 3/8-Inch Cable Lugs

Ancor 4/0-AWG 3/8-Inch Cable Lugs

These tinned copper lugs terminate 4/0-AWG cable at a ring connection. The ring opening is sized for a 3/8-inch stud.

View on Amazon

Questions from My Build

What Connected the Roof Equipment to the Van Entry?

A PVC conduit layout with boxes, fittings and cable glands.

What Did I Do at the Small Junction Box?

I drilled the box for a threaded PVC fitting and arranged the light-wire connections inside that part of the route.

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