How far apart should roof vents be placed?

screw holes through both flanges. Space the holes 12 to 14 in. apart.

How much clearance do you need for recessed lighting?

To determine how far apart to space your recessed lights, divide the height of the ceiling by two. If a room has an 8 foot ceiling, you should space your recessed lights approximately 4 feet apart. If the ceiling is 10 feet, you’ll want to put about 5 feet of space in between each fixture.

What is the minimum distance that recessed lighting fixtures must be mounted away from combustible material?

½ inch
8 Recessed Luminaire Clearance. A recessed luminaire that is not identified for contact with insulation should have all recessed parts spaced at least ½ inch from combustible materials.

How many vents should you have in your soffit?

Most professionals recommend one square foot of ventilation for every 150 square feet of attic area. This will help you determine how many soffit vents you need. For example, a 15′ x 40′ attic would have a total area of 600 square feet; divided by 150 equals 4 square feet of total ventilated space needed.

What is the maximum permitted length of a flexible connection between the outlet box and the fixture?

6 ft
The Code rule of 6 ft for lighting tap conductors [Sec. 410-67(c)] still limits all lighting fixture tap conductors to 6 ft. So all flexible conduit used from the last outlet box to a lighting fixture must be 6 ft or less. This applies to all trade sizes used as lighting fixture tap conductors.

How close can recessed light be to joist?

Minimum Clearances That said, a fairly standard recessed light should not be fitted so that any part of its assembly is less than half an inch from anything flammable — such as a timber joist — at the sides. A two-inch clearance from anything above the lamp is a typical minimum.

Where should soffit vents be placed?

Space the soffit vents evenly around the bottom of the low sides of your roof. There are several different types of soffit vents available including continuous, circular, and perforated vents made for vinyl siding.

Can you have too much ridge vent?

Yes, it is possible to install too much ridge vent. Passive attic venting systems are now designed so that they intake air from the soffits and expel air near the ridge. This is normally done without power by using the fact that hot air rises.