However, the user should never apply a load to that part that exceeds 1,000 lb (454 kg). The
safety factor provides a margin of safety above the working-load limit to accommodate normal
dynamic loading and normal wear.
Cautions for working-load limits and safety factors
The working-load limits defined by the manufacturer of any rigging component should never
be exceeded. Electro-Voice bases the working-load limits of its X1 and X2 products on a
minimum of an 8:1 safety factor. Other manufacturers of rigging components may base their
working-load limits on safety factors other than 8:1. For example, 5:1 safety factors are fairly
common amongst rigging manufacturers because many regulatory agencies call for a minimum
safety factor of 5:1.
When an X1 or an X2 loudspeaker system is installed where local regulations only require a
safety factor of 5:1, Electro-Voice insists the working-load limits of the X1 and X2 rigging is
never exceeded and an 8:1 safety factor be maintained for the X1 and X2 loudspeakers.
The user is cautioned that some local regulations may require safety factors higher than 8:1.
Electro-Voice insists the user maintain the higher safety factor as required by the local
regulations throughout the entire X1 and X2 installation. It is the responsibility of the user to
ensure any X1 or X2 system installation meets all applicable local, state or federal safety
regulations.
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Electro-Voice
Installation Manual
2015.04 | 02 | F.01U.310.953
