Forum Discussion
MEXICOWANDERER
Sep 01, 2016Explorer
I have to be careful with the BORG. Two 36-amp Megawatt power supplies.
On a 15-amp dedicated circuit if I plug in the charger with the switch set for both chargers operate, it will repeatedly trip the breaker and has tripped other 15-amp breakers.
The Pf may be .8 but four 680uf capacitors that are charging, get in the way of theoretical calculations.
That is why I put the chickenhead switch in the primary then backed it up with a spring-wound timer. Theoretical nonsense? Not when both chargers are plugged in online, and there is a momentary power outage.
Something else to chew on: A twenty amp plug "ensures" the use of a 20-amp receptacle which in turn ensures the use of a specification grade receptacle. The difference between even a 15-amp contractor's economy receptacle and a 15-amp spec grade receptacle is a laugh-a-minute until the fully-loaded contractor receptacle burns and ruins a good plug.
Only an amateur would believe "There is no difference between a contractor's receptacle and a specification grade receptacle of the same amperage" The change to a 20-amp plug is one of the more rational things I have seen done.
After burning toaster, broiler, coffeemaker, and microwave plugs on brand new (rented house) contractor's receptacles, they went into the trash four years ago and since then, no problems.
The max possible inrush into the BORG is something like 27 amperes.
Pf corrected chargers have fewer run issues, but what does a person do about those big capacitors? Yes there is a full wave bridge rectifier ahead of the 200 volt caps.
Charger control could be established with SCR control. But the SCRs I see are the size of a pin head. About the same square mm as the sum total of the area occupied by the hwang ho engineers brains who designed it.
KJITF, thanks for bringing some sense into this post :)
On a 15-amp dedicated circuit if I plug in the charger with the switch set for both chargers operate, it will repeatedly trip the breaker and has tripped other 15-amp breakers.
The Pf may be .8 but four 680uf capacitors that are charging, get in the way of theoretical calculations.
That is why I put the chickenhead switch in the primary then backed it up with a spring-wound timer. Theoretical nonsense? Not when both chargers are plugged in online, and there is a momentary power outage.
Something else to chew on: A twenty amp plug "ensures" the use of a 20-amp receptacle which in turn ensures the use of a specification grade receptacle. The difference between even a 15-amp contractor's economy receptacle and a 15-amp spec grade receptacle is a laugh-a-minute until the fully-loaded contractor receptacle burns and ruins a good plug.
Only an amateur would believe "There is no difference between a contractor's receptacle and a specification grade receptacle of the same amperage" The change to a 20-amp plug is one of the more rational things I have seen done.
After burning toaster, broiler, coffeemaker, and microwave plugs on brand new (rented house) contractor's receptacles, they went into the trash four years ago and since then, no problems.
The max possible inrush into the BORG is something like 27 amperes.
Pf corrected chargers have fewer run issues, but what does a person do about those big capacitors? Yes there is a full wave bridge rectifier ahead of the 200 volt caps.
Charger control could be established with SCR control. But the SCRs I see are the size of a pin head. About the same square mm as the sum total of the area occupied by the hwang ho engineers brains who designed it.
KJITF, thanks for bringing some sense into this post :)
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