Step 03.6 — Verify the PE screw and identify the three cables¶
Step 6 of 20 · Chapter 03 — Build plate
Tap to enlarge
Parts: none.
Do:
- Identify the three cables at the back edge: N, Bed L, and the BED TH ATC Semitec 104NT thermistor.
- Find the M4×6 BHCS beside them, the bed PE point.
- Leave it in place until Ch 10.
Check
Three labelled cables, no chafe or cut in the braid, no exposed conductor. PE screw present, snug.
What you're looking at
Manual p.57: the plate's cable exit. Three cables leave here: two thick braided AC leads, N and Bed L, and one thin two-pin BED TH thermistor cable. Beside them the protective-earth M4×6 BHCS bonds the plate to earth. Washer (verify on bench). See the glossary.
Caution
Rev D+ / LDO: the manual calls for an M3×6 BHCS you supply. Your plate ships with an M4×6 BHCS already attached — use that one. src
Caution
Rev D+ / LDO: do not wire the PE, the heater leads or the thermistor here. The bed harness is a breakout design: the plate's L and N land on the bed WAGO mount above the deck and its thermistor on the 2×2 XH splicer PCB, both in Ch 10; extension leads carry on below. src
Good stopping point · ~30 min since the last one
the plate is unpacked and identified top from bottom, the film is off, and the pre-applied heater, thermal fuse and PE screw are all inspected and left alone. The magnet is still in its backing. Do not start Step 03.9 until you can run 03.8–03.10 straight through: the magnet is a one-shot lamination.
Source: Voron manual p.57 · LDO Build Notes (Rev D) · LDO wiring guide § Wiring the Bed Heater