One transformer manufacturer's page suggests that High-leg to neutral loading to not exceed 5 % of transformer capacity.
2.
Signals may also be impressed onto the neutral leg of the three-phase electric power system, a practice known as " neutral loading ", in an effort both to reduce ( sometimes eliminate ) 60 Hz hum, and to extend effective transmission line distance.
3.
The cantilever fibreglass-epoxy tailplane is attached to the top of the fin, trimming of the elevator was achieved by spring loading the control stick and adjusting the neutral loading position . 80 litres ( later 100 ) of water ballast could be carried in plastic tanks in the wings and jettisoned as required.
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