Find out the rating of the buss bars. On a "200 amp" panel it could be 250 amps. If you cannot find a rating, your inspector may allow you to measure the buss and determine cross sectional area. Also do not use the maximum rating of the solar conditioner, transformer/inverter. Use the rated output of the panels installed. My residential conditioner is rated 15 amps but the max output of my panels is 12 amps. My panel bars are rated 125 amps x 1.20% = 150 amps. So I could install 50 amps of solar for my home and leave the 100 amp cir br intact.
Load Calculation questions
- Thread starter jotw
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