Delta t max will provide heaters to meet specified lengths and tolerances. The standard tolerances on heater length is 1/16". The wattage tolerance is 5%.

Amperage Conversion Table WATTS Volts Single Phase Volts 3 Phase Balance Load 120 240 480 240 480 100 0.83 0.42 0.21 0.24 0.13 150 1.25 0.63 0.31 0.36 0.18 200 1.67 0.83 0.42 0.49 0.25 250 2.08 1.04 0.52 0.61 0.30 300 2.50 1.25 0.63 0.73 0.37 350 2.92 1.46 0.73 0.85 0.43 400 3.33 1.67 0.84 0.97 0.49 450 3.75 1.88 0.93 1.10 0.55 500 4.17 2.08 1.04 1.20 0.60 600 5.00 2.50 1.25 1.45 0.73 700 5.83 2.92 1.46 1.70 0.85 750 6.25 3.13 1.56 1.81 0.91 800 6.67 3.33 1.67 1.67 0.97 900 7.50 3.75 1.87 2.17 1.09 1000 8.33 4.17 2.10 2.41 1.21 1100 9.17 4.58 2.30 2.65 1.33 1200 10.00 5.00 2.51 2.90 1.45 1250 10.40 5.21 2.61 3.10 1.55 1300 10.80 5.42 2.71 3.13 1.57 1400 11.70 5.83 2.91 3.38 1.69 1600 13.30 6.67 3.34 3.86 1.93 1700 14.20 7.08 3.54 4.10 2.05 1750 14.60 7.29 3.65 4.22 2.10 1800 15.00 7.50 3.75 4.34 2.17 1900 15.80 7.92 3.96 4.58 2.29 2000 16.70 8.33 4.17 4.82 2.41 2200 18.30 9.17 4.59 5.30 2.65 2500 20.80 10.40 5.21 6.10 3.05 2750 23.00 11.50 5.73 6.63 3.32 3000 25.00 12.50 6.25 7.23 3.62 3500 29.20 14.60 7.30 8.45 4.23 4000 33.30 16.70 8.33 9.64 4.82 4500 37.50 18.80 9.38 10.84 5.42 5000 41.70 20.80 10.42 12.10 6.10 6000 50.00 25.00 12.50 14.50 7.25 7000 58.30 29.20 14.59 16.90 8.50 8000 66.70 33.30 16.67 19.30 9.65 9000 75.00 37.50 18.75 21.70 10.85 10000 83.30 41.70 20.85 24.10 12.10

Variations of Ohms Law For longer life and better installation in liquids: The heater should be central to the main body of liquid being heated and not in a restricted space. Make sure to submerge the heated area in liquid at all times. Do not allow the heater to cycle on and off too frequently. Delta t max cartridge heaters and threaded fittings are offered with a stainless steel or brass outer shell. The best heater life is obtained by operating at less than maximum temperatures and controlling on/off cycling. Generally, the higher the temperature, the shorter the service life.