Electrical & Wiring · My build kit

Four-Post Covered Bus Bar Set

The four-post set is one of the compact stud-based layouts I bought for the van. It is listed separately from the six- and eight-stud distribution bars in my equipment collection.

By · Camper Van Freedom

Read my build notes ↓

The Item in My Kit

I bought Four-Post Covered Bus Bar Set as part of my camper van equipment.

The four-post set is one of the compact stud-based layouts I bought for the van. It is listed separately from the six- and eight-stud distribution bars in my equipment collection.

Comparing Four Posts with a Longer Connection Row

  1. I drilled roof junction boxes for threaded fittings and cable glands.
  2. I brought the light-wire groups and camera lead through their entries toward the larger box.
  3. I joined the local routes into the PVC conduit path leading into the van.
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 original pair and Blue Sea Maxibus use four main studs in a five-sixteenths-inch format. DAIERTEK changes to six M8 studs per bar, adding positions and changing the stud designation together.

Product Details And Van-Build Uses

SpecificationProduct Detail
PackagePair of covered bars
Main PostsFour on each bar
Stud Description5/16-inch in the purchase record

A paired bus-bar layout has two separate connection rows to place on the equipment board. Include the cover outline and the cable approach space around each post when making that layout. Labels on the drawing can connect each lead with the intended row without tracing every cable again. The stud description also belongs in the lug record, since the ring opening and cable-barrel size are different dimensions. These purchased bars remain separate from the larger multi-stud entries in the kit.

Exact Retailer Product Reference

Related Build-Kit Reference: Haisstronica 4/0-AWG Battery Lug Kit

What Should Be Drawn Around Each Bar?

Include the fitted cover, terminal access and space for the finished cable lugs, not only the base footprint.

Alternative products

Two Alternatives to Compare

Blue Sea's 2127 Maxibus offers another four-stud format, while DAIERTEK expands each bar to six studs under a cover.

ProductWhat distinguishes itPurchase link
Four-Post Covered Bus Bar SetCovered pair with four five-sixteenths-inch postsView on Amazon
Blue Sea 2127 Four-Stud Maxibus (alternative)Four-stud Blue Sea MaxibusView on Amazon
DAIERTEK Six-Stud Bus Bar Set (alternative)Covered pair with six M8 studs per barView on Amazon
Blue Sea 2127 Four-Stud Maxibus

Blue Sea 2127 Four-Stud Maxibus

This common bus bar provides four 5/16-inch connection studs. Its raised base supports the conductor and mounting points.

View on Amazon
DAIERTEK Six-Stud Bus Bar Set

DAIERTEK Six-Stud Bus Bar Set

This positive-and-negative bus bar set has six M8 threaded studs on each bar. Removable covers enclose the connection rows.

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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