I want to replace the AC breaker for my Freedom 20 inverter charger. I had this on hand, but wonder if it is advisable for this purpose.
Breaker
- Thread starter wufibugs
- Start date
- Status
Ken, I think the manual calls for a 30 amp breaker for the ac side of the inverter/charger. Would 35 be too high?
Giggle test time
20 amps at 14.4 volts is 288. watts
288 watts at 120 volts is 2.4 amps
double that for any inductors (not likely but we are giggling) and you get a whopping 5 amps on the 120 volt side. Divide by the efficency of (giggling again) 80% and you get 6.25 amps
Soooo, I'm thinking that since the code will not let you wire the AC side with less than 14 gauge and you probably cant even buy 3 wire in smaller sizes the manual is telling you the correct amp rating for protecting the WIRES that power the charger.
I bet if you read further there is one of those inline fusey things or a CB on the unit that actually protects the charger proper.
The CB protects the circuit and the fuse protects the appliance
20 amps at 14.4 volts is 288. watts
288 watts at 120 volts is 2.4 amps
double that for any inductors (not likely but we are giggling) and you get a whopping 5 amps on the 120 volt side. Divide by the efficency of (giggling again) 80% and you get 6.25 amps
Soooo, I'm thinking that since the code will not let you wire the AC side with less than 14 gauge and you probably cant even buy 3 wire in smaller sizes the manual is telling you the correct amp rating for protecting the WIRES that power the charger.
I bet if you read further there is one of those inline fusey things or a CB on the unit that actually protects the charger proper.
The CB protects the circuit and the fuse protects the appliance
Right again, Bill. The manual says that the Freedom 2000 is internally protected by a 12 amp breaker.
- Status