Be sure to read the testing instructions carefully. This is the cheapest place I could buy them and all 9 worked perfectly. As mentioned above, when testing a closed circuit, hold down the test button AND hold it down while testing the open circuit breakers. This time you need to read the instructions.
🔌 GE 150 or 200 Amp Main Breaker Generator Interlock Kit - 1 1/4 Inch Spacing Between Main and Branch Breaker
7 Review
Electricity Monitor Voltage Overload Protection
8 Review
🔌 Fulton 110V Single Phase On/Off Switch with Large Stop Sign Paddle: Ideal for Router Tables, Table Saws, and Small Machinery
6 Review
⚡ Enhanced Watt Meter Power Meter Plug: Convenient Home Electricity Usage Monitoring with Backlight, Overload Protection, & 7 Modes Display
7 Review
💡 High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review
Robertson Worldwide ISL432T8HEMV AH 3P20160 120-277V 50-60Hz High Power Factor 4 F32T8 Linear Lamp Fluorescent eBallast
6 Review
💡 Hydrofarm Quantum QT400 Регулируемый Балласт для 400W Гроу Лайтов
5 Review
Беспроводной интерфейс сертифицированного электронного балласта.
8 Review