The notation "8+3uF (450VAC) (+-5%)" for a washing machine motor capacitor means that the capacitor is actually two capacitors connected in parallel: one with a capacitance of 8 microfarads (uF) and the other with a capacitance of 3 microfarads (uF). When capacitors are connected in parallel, their capacitances add up, so the total capacitance for this capacitor is 11 microfarads (8uF + 3uF = 11uF).
The "450VAC" indicates the rated voltage for the capacitor, which means it can safely handle up to 450 volts of alternating current (VAC). It is important to use a capacitor with a voltage rating equal to or higher than the original capacitor.
The "(+-5%)" indicates the tolerance of the capacitor, which means that the actual capacitance may deviate by up to 5% from the stated value. In this case, the actual capacitance of the capacitor can be between 10.45uF and 11.55uF (11uF +/- 5%).
When replacing the capacitor, it is crucial to use a capacitor with the same or higher capacitance rating. In this case, you should replace it with a capacitor rated for approximately 11 microfarads (10.45uF to 11.55uF) and a voltage rating of 450VAC or higher.
It is essential to choose the correct replacement capacitor to ensure the motor functions properly and safely. If you are unsure about the right capacitor or how to replace it, it is advisable to seek assistance from a professional appliance technician.