FeaturesThe Canadian Electric code 10-906 (2) calls for protection of ungrounded conductors by means of smoothly rounded insulating surfaces at the entrance to raceways, pull boxes, junction boxes, etcT&B® insulated throat fittings, recognizable by the distinctive trademarked blue insulating liner in the throat, meet and surpass this code requirementT&B® insulated fittings also reduce wire pulling effort by as much as 50%