[aprssig] Emergency Power for Ham stuff (Voltage)

KF4LVZ aprssigZbr6 at acarver.net
Wed Jan 20 10:29:46 CST 2016


On 2016-01-20 07:32, Robert Bruninga via aprssig wrote:
>> ... Around power, keep one hand in your pocket.
>>  If you don't know what you're doing, keep the other hand in your pocket
>> too!'
> 
> Which reminds me.  I'm giving these solar panels and 48v power supplies to
> youth groups to teach about solar.  When I google for "safe" low voltage,
> there seems to be all kinds of standards.  Some  as high as 60v, others say
> 50v, some say 30v AC, and of course bell circuits all use 24vac.
> 
> It seems that the 48 Voc DC solar panel inherently current limited to 600 ma
> (current relates to safety of HOT conductors, voltage is the shock issue)...
> is not a suable issue...(?)
> 


The OSHA definition of low voltage is below 50 volts (AC or DC).
However, as is pointed out in training materials, it does not mean low
risk.  There are still other requirements that may be necessary even for
low voltage systems (including possibly grounding requirements).


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