240 VA (not W) is defined as "energy hazard" in UL/IEC 60950 and its
predecessors, UL 950 and UL 478. "Energy hazard" only applies if the potential
is 2 V or more.
(The dimension for energy is the Joule, not the volt-ampere.)
The standards state:
"A risk of injury due to an energy hazard exists if it is likely that
two or more bare parts
between which a HAZARDOUS ENERGY LEVEL exists, will be
bridged by a metallic object."
The standards do not state what the injury is.
The 8 A, 30 V, 100 VA (not 240 VA) is the limit for an "inherently limited
power source."
Rich
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