Solar PV System DC fuse keeps blowing

Talk Electrician Forum

Help Support Talk Electrician Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

solarrox

New member
Joined
Apr 5, 2018
Messages
3
Reaction score
0
Hi!

I have a 6.5Kw system installed with a SMA Sunnyboy inverter. Works great normally. One DC fuse blew 2 years ago and I replaced. However, it blew again repeatedly every 6 months. There are four DC fuses and this particular one keeps blowing. Any idea why this is happening?

I am not a Pro.

 
SMA Sunnyboy 7000us. 

200W panel, sun power I think. 

not sure about string arrangement.

i do have a pro coming out next week

 
32 panels

Yes, US model. its installed in California. 

the original installer has gone out of business

 
OK, I'll run it through my software next week - I'm away for the weekend visiting the outlaws. Might be worth contacting SMA technical helpline - very helpful people.

 
Top