The top-of-the-table clash brought out the best in Jaques, who partnered Matthew Phelps in a 218-run stand to put New South Wales in a strong position in the four-day match.
Jaques' 266-ball innings was hampered by a sluggish outfield at the Bankstown Oval venue and although he hit seven fours, at least a dozen shots pulled up short because of the conditions.
In Melbourne, Victorian part-time paceman Jonathan Moss turned from villain to hero as the Bushrangers routed South Australia for 191 on day one of the match at the Melbourne Cricket Ground.
Moss started badly, dropping a chance from South Australian captain Graham Manou in the covers off Shane Warne's bowling when he was on 32 and his side at 161 for 5.
But after being thrown the ball in the next over, Moss began a six-over spell which yielded 3-6.
In Hobart, a record-breaking 278-run fourth-wicket partnership between Michael Bevan and Dan Marsh put Tasmania on the front foot against Western Australia in the match at Bellerive Oval.
Western Australia made a good start when they claimed 23 for 3 but heroics from Bevan and captain Marsh turned the game on its head.
Tasmania was 301 for 3 when rain forced an end to play with 24 overs remaining.
Marsh and Bevan's 278-run knock broke the Tasmanian fourth wicket partnership record of 258 by Danny Buckingham and Michael Taylor in 1987-88.