[Elecraft] [OT] Grounding negative side of power supply?

[David Woolley (E.L)]

Unless the power supply is a Class II double insulated device and there 
are no connections from any of your equipment to true ground, it is 
essential that all its exposed metal work is bonded to the mains ground 
with a connection that is very low impedance at mains frequency and 
capable of carrying the full rated current of the nearest fuse.

If you don't do this, in a fault situation you could get electrocuted 
because the chassis is at a large voltage compared with other exposed 
metalwork in the building.

Top posted by list policy. Incidentally, this seems to be about an 
amateur radio topic, so it is on topic.

Joe Planisky wrote:

 >
 > Should the negative side of a power supply be connected to the supply
 > chassis (and thus to the "green wire" AC ground), or should it be left
 > floating?  I have heard arguments both for and against floating the

-- 
David Woolley
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