raschemmel:
Z = 1/(23.1415926535960 Hz * 1 E-6) = 2652.582 ohms + 56 ohms+56 ohms = 2764.58 ohms120V / 2764.58 = 43 mA.
Pzener = 5.1 V * 0.043 A = 0.2193 W
so I suppose the 5.1 V zener will be ok. ( I forgot to calculate the impedance of the 1 uF cap)
Impedances don't add like that, but that extra 100 ohms isn't making an difference either way.