Saturday, July 6, 2024

Don't use a $5 range outlet for EV charging

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Many level 2 home chargers plug into a NEMA 14-50R outlet, which is the same type a kitchen range would plug into.  A 40A EVSE is considered...
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Sunday, January 21, 2024

Hyundai Level 2 EV Charging Efficiency about 88%

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  Unlike PV inverters, EV on-board chargers usually don't have efficiency specifications published by manufacturers.  Studies done on ch...
Sunday, November 26, 2023

Level 2 EV Charging Deep Dive

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  Electric vehicles have an on-board charger, which converts an AC input voltage to DC to charge the batteries.  These chargers are designed...
Wednesday, November 8, 2023

240V EV Charging for $5

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  We recently purchased a PHEV which came with a portable home charger/EVSE.  It plugs into a NEMA 5-15R outlet, and supports a maximum char...
Friday, October 13, 2023

Calculating Copper Wire Characteristics

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For the early of my life I've relied on tables or similar references to look up things like copper ampacities and resistance.  Now I jus...
Saturday, May 13, 2023

MODBUS communication with Solis 4G-US inverters

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Solis single-phase inverters  have a circular RS485 connector  supporting MODBUS communication.  The connectors can be difficult to find f...
Monday, April 10, 2023

KSTAR Single Phase String Inverters

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  KSTAR New Energy makes single phase grid-tied inverters ranging from 1 kW to 10 kW.  I tested a 3000S, a 5000D, and a 6000D that were pro...