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Compressor Defender Compressor Defender™ vs typical surge protector: Defender protects 3 ways: Undervoltage (brownout), Surge, and Short Cyle Resource: Compare AG3000 with Compressor Defender |
NEC 2020 (Article 230.67) States that all residential dwelling units
shall be provided with a Surge Protective device ... applies to New and
replaced service equipment supplying dwellings are now required to be
protected by listed. Type 1 or Type 2 Surge Protective Devices. The compressor defender is typically used for HVAC installation, while AG3000 is installed at the service panel (breaker box). Note that the closer a surge protection device is to load, the better it protects. Multiple surge on same circuit gives greater protection: so AG3000 and Compresser defender can both be installed. | |
![]() Type2 surge protection is installed at equipment location, does not need to be connected to circuit breaker Requires Neutral wire Compressor defender CD1-024R 'protects the cooling system from power quality issues' home and light commercal HVAC from damage caused by surge + brownout (low voltage) + short cycle, / single and split phase/ 10 Ka/ Type 2/ $7500 warranty Single and split phase refers ro residential 120 volt or 240 volt/ this device is not made for 3-phase commercial 10 Ka = 10,000 amps Range B2 voltage drop protection Up to 3 year $7500 connected equipment warranty/ after homeowner insurance coverage 3 year warranty on defender Nema 3 indoor-outdoor UV resistant / 1/2" threaded/ fits 1/2" knockout / Install internally or Install directly onto the disconnect (all HVAC equipment requires disconnect) Has additional isolated wire to protect Y1 24 volt control wire Must replace after surge event/ same with all surge protection How do brownouts impact the average U.S. Household? 44 percent of homes experience brownout or low voltage event each year 12 percent must replace major appliance. How to identify brown-out... Incandescent light bulbs dim. You can be on a dual transformer from power company that causes voltage drop each time compressor turns on. Or overtaxed grid lowers power to certain areas to keep grid online during very hot days Ice storm causes downed power lines that can cause disturbances. Power company transformer can malfunction Appliances and electronics – including air conditioners, pool equipment, pumps, and power vent and hybrid water heaters etc - are susceptible to damage from low voltage if not protected. What goes unnoticed after a brownout is the wear on appliance motors. Low voltage causes motors to get hot, reducing life of motor Loss in power deteriorates the chemical makeup of refrigerants. Momentary power interruptions that last five minutes or less can be more costly than sustained interruptions. Buy: Compressor defender/ protect from brownout and surge/ at Amazon Resources: Sell sheet plus wiring diagram/ pdf Compare Compressor defender with AG3000 Warranty sheet At Intermatic |
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homeowners need to protect appliances such as air conditioners, furnaces, refrigerators and washing machines to avoid costly damages. | |
expensive systems like central air conditioning units, which would cost thousands of dollars to replace, sit completely unprotected from surges, brownouts and blackouts,” | |
86 percent of homeowners are at risk of incurring significant replacement costs because their air conditioning units are not protected from power surges | |
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Intermatic
AG3000 whole house or equipment surge
protection/ single and split phase/ 10 Ka/ Type 1 or 2/ $7500 warranty Single and split phase refers ro residential 120 volt or 240 volt/ this device is not made for 3-phase commercial 10 Ka = 10,000 amps Type 1 and type 2: Can be installed between power company transformer and main breaker box -or- inside main breaker box -or- at the HVAC cut off -or at subpanel in detatched building 10 gauge leads/ 18" long 120-240 Vac Nema 4x indoor-outdoor harsh environment/ UV resistant / 1/2" threaded/ fits 1/2" knockout HVAC or any application / $7500 connected warranty/ includes electronic components Must replace after surge event/ same with all surge protection Buy: AG3000 Type 1 Type 2 universal surge protection Pool and spa surge protection Resources: Surge protection manual Compare AG3000 with Compressor Defender $7500 warranty/ pdf How to wire whole house surge protection |
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Intermatic
PS3000 whole house/ or pool pump surge
protection/ single and split phase/ 10 Ka/ Type 1 or 2/ $7500 warranty Single and split phase refers ro residential 120 volt or 240 volt/ this device is not made for 3-phase commercial 10 Ka = 10,000 amps Type 1 and type 2: Can be installed between power company transformer and main breaker box -or- inside main breaker box 10 gauge leads/ 18" long 120-240 Vac Nema 4x indoor-outdoor harsh environment/ UV resistant / 1/2" threaded/ fits 1/2" knockout Recommended for use at pool pump $7500 connected warranty/ includes electronic components Must replace after surge event/ same with all surge protection Buy: PS3000 Type 1 Type 2 universal surge protection Pool and spa surge protection Resources: PS3000 surge protection manual PS3000 sell sheet How to wire whole house surge protection |
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Voltage monitor The problem of low voltage does not affect resistance loads like, light bubs or electric water heater, except to make them burn at dimmer capacity... low voltage does affect inductive loads like contactors, relays, motors, pumps, HVAC causing problems such as lower rotation speed on motor, causing higher temperatures, and burning out the motor. Voltage monitor Protect motors and equipment from low voltage. Adjustable voltage range Caution: select monitor voltage to match incoming Line voltage Select amp rating of contactor to match amp rarting of Load Select matching contactor voltage and coil voltage range Undervoltage on contactor coil will cause chattering, Overvoltage on coil will melt coil. Single and 3-phase Buy: Single phase 95-270 volt range 3-phase 80-300 volt range ICM phase monitor Din rail fuseholder 10 x 38 mm fuse Resources: Fuseholders Difference between single phase and 3-phase |
Surge
protection Compressor Defender is Type 2 AG3000 shown below is Type 1 Type 2 Type 1 permanently connected, hard wired SPD surge protection device installed before or after main breaker box or main disconnect. Type 1 is located between secondary on service transformer and line side of service entrance (main breaker box or main disconnect). Or anywhere on load side of service entrance including at equipment location (HVAC disconnect etc). Type 2 is installed at the main disconnect or at breaker box or at the equipment location (HVAC disconnect etc), May or may not be connected to overcurrent protection (connected to circuit breaker or disconnect) depending on listing..., read instruction manual Type 3 is used in addition to Type 1 or 2, especially when location is farther away. Install as surge outlet or surge protection strip or surge supressor at your computer, or at any location farther than 50 feet away from main surge protection. Type 3 is connected to ground and not to overcurrent protection. Surge protection that is rated Type 1 is considered Type1 Type2 and can be installed anywhere within the distribution system. Multiple surge protectors can be installed, and will protect better as distances increase... because surge, such as lightning, can enter wires anywhere. Resources: Surge protection .pdf How to wire disconnects /safety switches Why you need ground |
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Type 1 Type 2 surge![]() |
Resource: AG series sell sheet/ pdf Single phase and 3-phase models Choice of voltages Nema 4 rainproof enclosure Type 1 or Type 2 sutge installation 1 year warranty Install vertical or horizontal etc 36" leads/ 12 gauge wire/ Cut to correct length, do not coil or wrap extra lead wire, avoid 90 degree bends, 4' radius on bends, keep wires straight as possible/ 1 year warranty |
Single
phase 120-240V Volt Buy: AG24013 Type 1 Type 2 Resource: Single phase 120-240 volt surge manual |
Single
phase 277-480V Buy: AG48013 Type 1 Type Resource: Single phase 277-480 / 480-480 volt surge manual/ pdf |
3
phase 4 wire 208-120 volt Buy: AG2083C3 Type 1 Type 2/ Resource: 3 phase 120V-208V / 208-208 volt surge protection manual |
3-phase
4-wire 120-208-240 4-wire High leg delta Buy: AG2403C3 Type 1 Type 2 Resource: 3 phase high leg delta surge protection manual |
3-phase 4-wire
277-480 volt Buy: AG4803C3 Tpe 1 Type 2 Resource: AG series sell sheet/ pdf |
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Single phase 4 wire
600 volt Buy: AG65033/ Type 1Type 2 Resources: 3 phase 277V 480V surge protection manual |
3
phase 4 wire 600 volt Buy: AG65033/ AG6503C3/ Type 1Type 2 Resources: 3 phase 277V 480V surge protection manual |
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Correct
grounding can help prevent surge damage (but cannot protect from
brownouts or low voltage events) Ground wire All phone, satellite, pool equipment, solar systems and electric pnaels must be grounded. Check local electric codes. What does this mean? Drive ground rod 8-10 feet into soil. Bond #6-8 bare copper wire to ground rod and to solar panels and pipes on roof. Do NOT ground electric system to water pipes. Ground must be connected to ground rod. Stray current corrosion can cause pipes to deteriorate. Uncertain bond to ground because of plastic pipes. Buy: Ground rod and clamps at Amazon Bonding lugs Bond all ground wires together to help prevent surge & lightning damage Bonding all grounds together will help prevent damage from lightning strikes beyond 100' away... Strong lightning strikes within 100 feet must be handled by lightning rod Local code requires bonding: this includes all ground rods for satellite, TV, phone, solar, electric panel, subpanels (within 100 feet) etc must be connected together and bonded to main electric panel ground rod driven into soil at correct depth to meet local code. Consult local electrician. Codes for grounding depth vary: loose rocky dry soils are less conductive than dense wet soils No system other than lightning rods will protect against direct lightning strike or strike within 100 feet. Move indoors and do not stay on roof, or move metal ladders, or touch anything made of metal when lightning is within 1 mile or can be heard or seen. |
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Electricity: The grid is defined by three parts: transmission, distribution and end user. The following links show how it works Power plant to end user power pole Power pole to residential breaker box Power pole to commercial breaker box How to wire residential single-phase electric How to wire commercial 3-phase Difference between single phase and 3-phase Why you need ground wire How to wire 3-phase timer |
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