Yes the first line is an 1 3/4. You want to get water on the fire quickly, this line is much easier to move around especially with most companies understaffed. You will be amazed at how much fire that line will put out with a good nozzle man and back up crewI'm just curious, from the guys who were or still on the job. Heavy volume of fire like this on the top floor of a 3 story MD. Is the first line still an 1.75"? I'm definitely not saying either is wrong, just wondering what the SOP says.
As far as the Line/Nozzle discussion earlier above not disputing anybody's choices but I do favor 1 3/4 ....when we organized SQ*41 in 1990 we incorporated the "Ghetto Blaster" whose origin came from Nick Visconti when he was the CPT of ENG*48....Our first CPT in SQ*41 John Keenan & FF Kevin McCauley were big proponents of it as they had both used it many times in ENG*37....it was a 15/16th bored out by a machinist to an 1 1/8 with an old time 8 inch brass pipe as the tip & then fitted with a pistol grip ( the trick to get the full effect the pistol grip interior also had to be bored out)...in SQ*41 we had our Primary Bed Nozzle set up as such .... I remember heavy Fire blowing out the front door of a Brownstone Hallway & opening the line from the curb & the stream hitting the back hallway door/wall with little effort.