Ampacity calc for laundry

WillK

Okay, laundry room currently is using an old circuit on which the washing machine and now the sink pump are connected... As well as kitchen small appliances, disposal, dishwasher, a light fixture above the kitchen sink, I think possibly the garage, the light in the utility room and a light outside. I'm not saying I like it, in fact I can clearly say that I don't because it's one of the reasons I'm rewiring the kitchen onto new circuits. But it's there. On one 15 amp circuit.

I added the sink pump to raise the laundry waste water to go into the kitchen sink drainage when I needed to replace the underground run to the main stack.

So anyway, I know that it would be best to have the washing machine and sink pump on a new circuit which would require GFCI. My question is whether they can both be on one 20A circuit. Here's the specifics:
Flotec 1/4 HP pump, rated as motor full load amps 8.5
GE Energy Star rated 4.0 cu. ft. frontload washer (about 4 years old), only info I can get off GE's website says maximum current rating is 12.0 amps, but it says that as if it's for the dryer which is confusing because it says that on the washer page.

The dryer is electric and already has its own dedicated outlet of course.

What I don't get is if there's a 12 amp draw from the washer and 8.5 from the pump, I should already be tripping the 15 amp breaker every time.

Scuba_Dave

Laundry area requires a dedicated 20 a circuit
My sump pump is also in the same room as the laundry
I actually had the washer, sump pump, sm fridge & a freezer running off a 20a circuit

Washer 12a is probably the Max it can draw, same with the sump
So they can run together usually without a problem
I have a Killawatt that I use to test power draw
...I haven't used it on the washer or the sump