Simple explanations of confusing product specs like PSI, GPM, watts, amps, volts, amp-hours, CFM, torque, lumens, and cord gauge.
Air compressor shopping gets confusing because the biggest number on the tank is usually PSI, while the number that decides whether an air tool keeps working is often CFM. Then there are gallons, horsepower, SCFM, duty cycle, decibels, oil-free pumps, and “maximum” ratings. A compressor can look powerful on the box and still be a…
Air-compressor tank gallons tell you stored-air capacity, not pump output. Learn what bigger tanks change, what they cannot fix, and how storage affects cycling and recovery.
Air-tool CFM requirements vary by exact tool and usage. Use manufacturer airflow and PSI values, understand average versus loaded consumption, and size the compressor from real demand.
Portable generator labels usually lead with the largest wattage number. That number may be the generator’s short starting output, not the power it can deliver continuously. If you size a generator by the biggest number on the box, you can still end up with too little continuous power, the wrong outlets, or a machine that…
Learn how 16, 14, and 12 AWG extension cords differ, and why amp draw, cord length, ratings, and intended use all matter.
Understand what magnetic, electronic, and advanced stud finders actually detect, how depth and calibration affect results, and why every reading needs verification.
Peak horsepower is one of the biggest numbers on a wet/dry vacuum box, but it is not the motor’s normal operating horsepower. Here is what CFM, water lift, hose size, filtration, and tank capacity tell you instead.
Shop-vac hose diameter changes debris capacity, flexibility, accessory fit, and how the vacuum feels to use. Here is when 1-1/4, 1-7/8, and 2-1/2-inch hose systems make sense.
Red, yellow, green, white, and black pressure-washer tips are not just color coding. Here is what 0, 15, 25, 40 degrees and soap nozzles actually change, and which ones are easiest to misuse.
A longer extension cord can cause more voltage drop, heat, and power loss if the wire is too small for the load. Here is why 25, 50, 100, and 150 feet can change the gauge you need.