road glide
New Member
Newbie here.......Reading about the rule of 120?? A little confused.....
I would like to install the 6 panel array 500 watt bifacial near the barn 40-50 ft away (clearest southern exposure). And wire a 20 amp double pole into the barn panel, maybe 30 if i could get away with that?
Our barn has a GE 100 amp panel but minimal breakers. We have heavy usage right now because we are running both 13500 BTU A/C units with 1250 wattage each....The barn panel is fed 350 feet away sched 40 underground #4 three conductors #8 grnd but I installed a 60 amp breaker at the main service panel for the barn. (minus 40 amps, just in case)
Main service GE 100 amp. 100amp main, 100amp house. The house uses minimal electric....I have captured specs on what we use.
Around 42 amps unless we use the dryer at 18 amps...That includes freezer 3 amps, refrig 6.5 amps, gas oven 5 amp for igniter, microwave 13.8 amps, room A/C 11k btu at 10 amps....We have on demand lp gas water heater, gas stove, wood burning FP for winter. Why I am reviewing this, our PG&E bill used to be 100 -200 (300 summer) monthly now with more folks here we are at $408, $528 and this month is tracking for $580 this next billing cycle...
Don't know whether to install a 2kw (and chip away at the monthly) or larger system 4-5kw (or shut it down during winter??)
I like the SMA grid tie inverter 3800 that has a dc disconnect at the inverter. Also studying micro inverters (somewhat confusing)
So configure it at the rack and then run a 40-50 ft #6 awg underground and tie into the barn sub panel. That would then feed the main panel and offset some of our utilization....
So after all that...My question is: can the PV array (3-4KW) tie into the barn sub panel via a 20-30 amp double pole 240 volt breaker? The energy would then travel back to main panel and back feed at the 60amp breaker. Max amps should be 20 amp or 30 amp correct? Would this be overloading my main house panel based on rule of 120?
I would like to install the 6 panel array 500 watt bifacial near the barn 40-50 ft away (clearest southern exposure). And wire a 20 amp double pole into the barn panel, maybe 30 if i could get away with that?
Our barn has a GE 100 amp panel but minimal breakers. We have heavy usage right now because we are running both 13500 BTU A/C units with 1250 wattage each....The barn panel is fed 350 feet away sched 40 underground #4 three conductors #8 grnd but I installed a 60 amp breaker at the main service panel for the barn. (minus 40 amps, just in case)
Main service GE 100 amp. 100amp main, 100amp house. The house uses minimal electric....I have captured specs on what we use.
Around 42 amps unless we use the dryer at 18 amps...That includes freezer 3 amps, refrig 6.5 amps, gas oven 5 amp for igniter, microwave 13.8 amps, room A/C 11k btu at 10 amps....We have on demand lp gas water heater, gas stove, wood burning FP for winter. Why I am reviewing this, our PG&E bill used to be 100 -200 (300 summer) monthly now with more folks here we are at $408, $528 and this month is tracking for $580 this next billing cycle...
Don't know whether to install a 2kw (and chip away at the monthly) or larger system 4-5kw (or shut it down during winter??)
I like the SMA grid tie inverter 3800 that has a dc disconnect at the inverter. Also studying micro inverters (somewhat confusing)
So configure it at the rack and then run a 40-50 ft #6 awg underground and tie into the barn sub panel. That would then feed the main panel and offset some of our utilization....
So after all that...My question is: can the PV array (3-4KW) tie into the barn sub panel via a 20-30 amp double pole 240 volt breaker? The energy would then travel back to main panel and back feed at the 60amp breaker. Max amps should be 20 amp or 30 amp correct? Would this be overloading my main house panel based on rule of 120?