To ensure that your heat shrink fits snugly on your substrate, you need to do some basic but important measurements. STEP ONE – CHOOSING THE RIGHT SIZE HEAT SHRINK Getting a perfect seal is about having a simple and easy to follow process which you can put into place easily.įollow these three steps to perfect heat shrink application. The ease of use is one of the reasons why heat shrink tubing is such a popular material for protection, insulation, decoration and more.īut making sure you get the perfect connection and a smooth clean seal every time is more difficult. When you have the correct equipment, applying heat shrink tubing is relatively easy. The principles of application remain the same for every piece of tubing. The tubes are available in different materials and different sizes, they also have different shrink ratios. There are different kinds of heat shrink tubing. The contracted tubing can be used to seal connections, identify cables and much more. Tighten the screws in the connector, and heat the shrink tube with a heat gun to complete the seal.Heat shrink tubing is an expanded plastic product which contracts when it is heated. Then, insert each conductor into the connector and match the colors. This method can be used if wiring is deep in the ground and no possible damage from gardening tools hitting it.Ī better choice for wires that you fear might get cut again will be connectors with a thick protective covering on them and a silicone-based sealer inside for waterproofing.īefore you use the splice kit, you will need to cut the damaged wiring on either side of the break and strip the outer sheathing back about three inches. This will coat the connection and cover the wire with adhesive, oozing out the ends of the tubing as it shrinks. Inside the heat shrinkable tubing is an adhesive liner that will melt when heated. Step 5 - Use a Splice KitĪ splice kit containing an inline connector will join the two ends of a break securely in a polyolefin sleeve, which will shrink when heat is applied, to maintain a water-resistant connection. They have silicone inside the connector which will seal out the moisture after you have inserted the wiring.ĭo not reuse these once you remove them, however, because you may strip away too much of the silicone when you pull it off, and it will no longer be watertight if reused. These are a must when joining wires together in the watertight box. Special sealing box cable connectors provide the waterproof seal for the electrical wiring that enters the box as well.
This will protect the connections from corroding due to moisture and chemical elements from the surrounding ground. If you are going to add additional circuitry to your existing wire underground, purchase waterproof junction boxes where connections can be made inside the box.
Step 4 - Purchase Junction Boxes and Cable Connectors Then, dig along the sight path between the electric cables exit and entry points. Use a non-contact voltage tester afterward to confirm that the cable is no longer live. Step 3 - Dig up the Affected Wireįirst and most importantly, make sure you turn the main electrical supply off before digging or attempting any repair to, or in addition to, the electrical wire underground. may incur a small fee the best practice is to call and ask. Locating other underground wires for light poles, barns, pools, garage, etc.
UNDERGROUND SPLICE KIT FOR NOMEX WIRE FOR FREE
Most provide this service for free when locating the main power wires running from their incoming source to your meter or box. Step 2 - Call the Phone and Utility CompaniesĪnother alternative is to phone your local electric company and use their locating service.
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