How to wire the fire switch
As a key component in the fire safety system, the fire switch's correct wiring is directly related to the reliable operation of the equipment in emergency situations. This article will introduce in detail the wiring method, precautions and related hot topics of the fire switch to help you quickly master the key points of operation.
1. Fire switch wiring method
Fire switches are usually used to control emergency lighting, smoke exhaust fans and other equipment. The following steps must be followed for wiring:
| steps | Operating Instructions | Things to note |
|---|---|---|
| 1 | Disconnect power to ensure safety | Use a test pen to confirm there is no electricity |
| 2 | Identify switch terminals | Usually marked COM (common terminal), NO (normally open), NC (normally closed) |
| 3 | Connect FireWire to COM terminal | The wire diameter must meet the load requirements |
| 4 | The equipment control line is connected to the NO terminal | The contacts are closed and energized during emergency conditions. |
| 5 | Ground wire connection | Yellow and green two-color wire connected to PE terminal |
2. Recent fire-related hot spots (last 10 days)
| hot topics | Main content | Source platform |
|---|---|---|
| Electric vehicle charging fires occur frequently | Policies banning home charging have been introduced in many places | Hot searches on Weibo |
| Smart fire protection system promotion | Internet of Things technology applied in fire monitoring | Today's headlines |
| High-rise building fire drill | Multiple cities conduct joint evacuation drills | Douyin hot list |
| Anti-counterfeiting campaign against fire protection products | State Administration for Market Regulation investigates and punishes counterfeit fire extinguishers | CCTV News |
3. Frequently Asked Questions about Wiring
1.How to judge the quality of switch?
A high-quality fire switch should have CCC certification, the contacts should be made of silver alloy, and the flame retardant grade of the shell should reach V0 level.
2.How to wire the dual control fire switch?
It is necessary to use a three-core cable to connect the COM terminals of the two switches to the live wire in parallel, and L1/L2 cross-connection.
3.What should I do if the test does not work after wiring?
Check whether the circuit is open and whether the contacts are in good contact. If necessary, use a multimeter to measure continuity.
4. Safety regulations requirements
| Standard number | Content points |
|---|---|
| GB50016-2014 | Fire lines should be laid independently and fire-resistant cables should be used |
| GB50166-2019 | The terminal blocks should be anti-loosening and the wire ends should be hung with tin. |
| GB17945-2010 | Emergency lighting switches must be clearly marked |
5. Operation precautions
1. An electrical work license must be obtained before construction
2. IP65 protection level switches should be used in humid environments.
3. Three functional tests are required after completing the wiring.
4. Regularly check the oxidation of contacts (recommended once every six months)
Through the above structured content, we systematically introduce the fire switch wiring method, and combine it with the current hot spots in the fire protection field to help readers understand the industry trends while mastering the technical points. National regulations must be followed in actual operations to ensure the reliability of the fire safety system.
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