PNC/Order To Trade Ratio

There is order to trade ratio rule, where blocking and penalty rule there so i want to know does it applicable on retail trader like us who trading through broker instead of having trading membership for trading. if its applicable then what exactly band where order not consider in otr ratio for eg if order is in price of ± 1 of last price then order dont consider in otr. what happen if otr cross limit of 2000.