Drawing of J1772 (CCS1 Combo) connector, with labeled pinouts. This is a view facing the end of the plug. Drawn approximately to scale, 10px = 1mm. Dimensions abstracted from https://web.archive.org/web/20210501000000*/https://ieee-pes.org/images/files/pdf/pesgm2011/supersessions/tues-am/1-IEEE-EVSE-Standards-Status-11_07_26_Kissel.pdf and http://www.fveaa.org/fb/FCI_Power-S3-SAE-J1772-Charge-plug-2010-06_276.pdf. Details from https://interchargers.com/plug/type-1/
L1 - AC Line, for single phase AC or split phase (up to 250v).
N  - AC Neutral (single phase) or AC Line2 (split phase).
PE - Protective Earth (AC Ground)
PP - Proximity Pilot (aka Plug Present or Connection Switch). Connected to vehicle chassis ground. Used to detect plug is inserted.
CP - Control Pilot (digital signalling). Communicate max current and control charge start/end.

DC+/DC- - Direct Current charge pins
Own work
Mliu92