Can DC ground AC?

Getting into the nuts and bolts of wind and solar power components, installation and performance issues, ask technical questions, answers and tips

Can DC ground AC?

Postby Thewomb » Thu Jun 06, 2019 7:00 pm

can you mix DC and AC grounds?

for example can a DC solar array ground to an AC distribution / fuse box ground? or even directly to the AC ground stake?
Thewomb
Solar Supporter
Solar Supporter
 
Posts: 14
Joined: Thu Mar 31, 2016 8:06 pm

Re: Can DC ground AC?

Postby davidg » Fri Jun 14, 2019 9:38 pm

Thewomb wrote:can you mix DC and AC grounds?

for example can a DC solar array ground to an AC distribution / fuse box ground? or even directly to the AC ground stake?

No, DC ground array must ultimately go to the earth bar in the SB, can go via the AC grid connect inverter for instance.
SPS Standalone Power System/Hybrid specialist - Store the Sun!
SELECTRONIC SPMC482-AU, 8.2kW's of Arrays
Selectronic Certified AC-Coupled Fronius 8.2kW Inverter
1900Ah 48V Bank

An OTT Genset for a house.
PVOutput Stats

Sparkys light up your life :)
User avatar
davidg
Solar Crusader
Solar Crusader
 
Posts: 2098
Joined: Sat May 05, 2012 7:38 pm
Location: Dandenong VIC- *Really don't like Power Retailers at all.

Re: Can DC ground AC?

Postby Thewomb » Sat Jun 15, 2019 6:41 pm

Hi David.

thanks for the info.

tw
Thewomb
Solar Supporter
Solar Supporter
 
Posts: 14
Joined: Thu Mar 31, 2016 8:06 pm

Re: Can DC ground AC?

Postby davidg » Sat Jun 15, 2019 6:46 pm

The sparky installing the array should know that though, in the end the earth should be unbroken to the SB that the Inverter is also connected to.
If it's a DC coupled array it still applies. Labeling inside the SB is also required that identifies the array/s solar earth wire/s, and it must be a minimum 4mm2 although longer runs will require a larger size earth cable.
SPS Standalone Power System/Hybrid specialist - Store the Sun!
SELECTRONIC SPMC482-AU, 8.2kW's of Arrays
Selectronic Certified AC-Coupled Fronius 8.2kW Inverter
1900Ah 48V Bank

An OTT Genset for a house.
PVOutput Stats

Sparkys light up your life :)
User avatar
davidg
Solar Crusader
Solar Crusader
 
Posts: 2098
Joined: Sat May 05, 2012 7:38 pm
Location: Dandenong VIC- *Really don't like Power Retailers at all.

Re: Can DC ground AC?

Postby Thewomb » Sat Jun 15, 2019 7:10 pm

thanks again David. I've run 4mm2, it's about a 10m run total to the SB.
Thewomb
Solar Supporter
Solar Supporter
 
Posts: 14
Joined: Thu Mar 31, 2016 8:06 pm


Return to Components, Installation And Performance

Who is online

Users browsing this forum: No registered users and 0 guests

new solar power specials
cron