Installing an Enlighten Envoy in a basement location and have been advised (by a non-electrician) not to use a GFCI receptacle as it would invalidate the mfrs warranty. The only reference I see in the installation/operation manual indicates not to use with a power strip or a surge protector. My understanding is that GFCI's and surge protectors are two different animals. Can anyone clarify for me? I have also contacted Enphase but have yet to hear back from them.