1. Approximate maximum wattage on a 16A circuit at 230V? · ~1920W ✓ ~3680W · ~7360W · ~960W P = V × I = 230 × 16 ≈ 3680W. At 120V the same 16A gives only ~1920W.
2. "SWL" / "WLL" on a truss or clamp refers to… · The breaking load ✓ The safe / working load limit · The unit's weight · Beam angle Safe/Working Load Limit is the rated maximum to use — far below the breaking load, with a safety factor built in.
3. On a three-phase supply you should… · Put everything on L1 ✓ Balance load across L1/L2/L3 · Ignore phase entirely · Only use neutral Spreading load evenly across the three phases avoids overloading one and tripping it.
4. Every overhead fixture additionally requires… · A second gel frame ✓ A safety bond / secondary suspension · A spare lamp taped on · Two power feeds A safety bond rated for the fixture mass is a legal and practical must if the primary clamp fails.
5. A DMX data line should be terminated at the last device with… ✓ A 120Ω terminator · A power plug · An open end · A mic capsule A 120Ω terminator on the final unit prevents signal reflections that corrupt the data.
6. Why leave headroom rather than load a circuit to 100%? · It looks tidy ✓ Inrush, heat and safety margin · To save gel · DMX requires it Lamp inrush current, heat and a safety margin mean you never run a circuit right at its rated maximum.