為保證示蹤線的導電性、強度、耐腐蝕和耐久性，一般宜選擇截面積大于2.5毫米的多股銅質電線，鋪設時盡量讓示蹤線保持在管道的頂部位置，在三通等分支處應將導線接頭的絕緣層剝掉，把銅芯絞在一起數圈，然后用絕緣膠布裹好接頭，以保持良好的導電性。

In order to ensure the conductivity, strength, corrosion resistance and durability of the tracer wire, multi strand copper wires with a cross-sectional area of more than 2.5 mm should be generally selected, and the tracer wire should be kept at the top of the pipe as far as possible during laying. The insulation layer of the conductor joint should be stripped off at the branch of the tee, and the copper core should be twisted together for several circles, and then the joint should be wrapped with insulating tape to maintain good conductivity.

示蹤線應留有一定的線頭余量，并避免導線頭被泥土或雜物覆蓋，為減少無法出地的示蹤線末端的接地電阻，需采取剝掉絕緣層裸露芯線30cm的良好接地措施，對于采取定向鉆方式鋪設的PE管道，應選用強度更大的導線，以避免在施工中被拉斷,導致無法探測定位；當導線直徑遠小于埋深并忽略地介質和空氣的介質變化時，示蹤線可視為均勻介質中的一條無限。

A certain amount of wire head allowance shall be reserved for the tracer wire, and the wire head shall not be covered by soil or debris. In order to reduce the grounding resistance at the end of the tracer wire that cannot go out of the ground, good grounding measures of stripping the insulation layer and exposing the core wire for 30cm shall be taken. For PE pipes laid by directional drilling, wires with greater strength shall be selected to avoid being broken during construction, resulting in the inability to detect and locate; When the diameter of the conductor is much smaller than the buried depth and the medium changes of the ground medium and air are ignored, the tracer line can be regarded as an infinite line in the uniform medium.

此外在自己動手接示蹤線的時候要注意這些事項（請按照操作說明要求施工）：

In addition, pay attention to these matters when connecting the tracer line by yourself (please follow the operation instructions):

1、用剪刀剪開（分離）兩條并聯的示蹤線時，應注意兩條線是否均勻，被分開的兩條示蹤線表面要光滑，不能有凸臺、尖角（非常重要），會影響連接器的防水性能。

1. When cutting (separating) two parallel trace lines with scissors, attention should be paid to whether the two lines are uniform. The surface of the separated two trace lines should be smooth without bosses and sharp corners (very important), which will affect the waterproof performance of the connector.

2、是否有金屬線漏出，不能將外漏金屬絲的示蹤線埋地。

2. Whether there is metal wire leakage, the tracer line of the leaked metal wire cannot be buried.

3、在剝PE保護層時不要損傷金屬線。

3. Do not damage the metal wire when peeling the PE protective layer.

4、接線柱連接好接頭后，應用力拉動接頭兩端的示蹤線，檢查接頭的連接強度。

4. After the terminal is connected to the joint, pull the tracer wire at both ends of the joint with force to check the connection strength of the joint.

5、不要忘記對防腐/防水連接器的緊固；出地后的示蹤線頭部位，應用防水膠布和熱縮管封緊。

5. Don't forget to fasten the anti-corrosion / waterproof connector; After leaving the ground, the tracer thread head shall be sealed with waterproof tape and heat shrinkable pipe.

6、管道示蹤線應在每個閥門井處設置接頭便于檢測，每五百米必須設置一個檢測井。

6. The pipeline tracing line shall be provided with joints at each valve well for inspection, and an inspection well must be set every 500 meters.

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