[RE-wrenches] GFCI Options and OCP on SMA's Secure Power Supply
Jeff Clearwater
jeffc at villagepowerdesign.com
Wed Nov 6 11:34:41 EST 2019
Wrenches,
I've got 5 SB 7.7s going in and I'm contemplating various ways to
configure the 5 SPS circuits.
Questions:
1. I'm not clear if additional overcurrent protection is needed
anywhere in the circuit? - the SMA manual doesn't mention it and I'm
wondering if it's built in? I assume the switch is not carrying the
current so doesn't need OCP but how about the outlet?
2. SMA recommends 30mA of for the GFCI device - Most GFCI outlets are
5mA (Class A) or 20mA (Class B). What have folks been using to avoid
nuisance tripping? Does this lead us back to a 30mA GFCI breaker?
3. Anyone experience appliance damage from brownouts - can one run
multiple fridges on one 16 Amp circuit? Experience?
Thanks!
Jeff
~~~~~~~~~~~
Jeff Clearwater
Village Power Design
linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/>
www.villagepowerdesign.com <http://www.villagepowerdesign.com>
cell - 413-559-9763
~~~~~~~~~~~~~~~~~~~~~~~
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