The National Electrical Code Trade Competency Test 1 2023 page # olem # Applied Nat answer page # NEC reference gnment A trical Systems pters rec book 7-01-008-90.3 37-02-008-90.3 037-03-023-110.9 037-04-018-100p46 037-05-020-100p 037-06-013-100 037-07-013-1 037-08-012 037-09-0 Chapter 1-The National Electrical Code See Working Clearances for problems 16 through 20. 16. The minimum working clearance at A is ___'. 17. The minimum working clearance at B is ____. 18. The minimum working clearance at C is _'. 19. The minimum working clearance at D is 20. The minimum working clearance at E is INSULATED WALL 0V TO 600 V CONDITION 1 FRONT OF ELECTRICAL EQUIPMENT NO LIVE OR GROUNDED PARTS ON WALL GROUNDED WALL (B) OV TO 150 V 151 V TO 600 V CONDITION 2 FRONT OF ELECTRICAL EQUIPMENT GROUNDED PARTS ON WALL WORKING CLEARANCES FRONT OF ELEC EQUIPMENT- D 0V TO 150 V E 151 V TO 600 V CONDITION 3 EXPOSED LIVE PARTS ON BO 037-10 037 03