Hello All, could someone please tell me what an ANSUL system is? There will be 5 circuits going into a box containing 9 normally closed contacts. The 5 circuits are 2-3 phase grilles, 1-1 phase rice warmer, 1-1 phase refrigerator drawer, and finally 1-1 phase light. I'm guessing this is a type of emergency shut off system. The ANSUL system shows to be tied into the exhaust/vent hoods. Thanks.