Forum Discussion
Bedlam
Nov 18, 2019Moderator
time2roll wrote:
I recently added a 20a electric oven, 20 amp microwave, 30 amp EV charger to a rental house with 100 amp service. (all 240v) Electrician said it was fine. Does have a gas dryer.
Can or can't... I did it. No issues.
At your house turn EVERYTHING electric on and measure the main feed with your clamp-on ammeter. Probably less than 50 amps.
It's about duty cycle of the devices you add to that circuit. If the charger will be drawing close to maximum the entire time it is connected, that leaves less reserve for the other circuits. Here are a couple of examples in my world:
My 30A camper circuit can pop a breaker when multiple items compete for the same limited resources - If I have the electric fireplace heater going while the hot water heater and fridge are on electric, I can choose between the convection/microwave oven and coffee pot but not both without shutting one of those off or switching to LPG.
In my garage, I have a switch that allows me to feed power to the water heater or an arc welder. The feed can power one or the other, but not both. My compressor shares a feed with the garage door opener and both cannot operated off that circuit either.
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