How to install shielded cable

Shielded cable is a type of flexible metal hose used to protect electrical wiring that runs through homes in areas where building codes require the use of such protective material. 

Some cities or municipalities require that metal conduit or shielded cables be used to protect wiring in residential and commercial buildings to help prevent fires.

 You could ask someone to install a shielded cable; however, doing it yourself is much more rewarding and much easier than you might think. 

So, use this easy-to-follow how-to guide to save some money and install the shielded cable yourself.

Step 1 – Prepare the junction box

Use a screwdriver to drill one of the perforated tabs in the junction box where the shielded cable will be installed.

 Insert the screwdriver into the crack and then use it to open the removable tab. 

Using his fingers, he worked the removable tab back and forth until it just snaps off the junction box.

Step 2: determine the length and route the shielded cable

Use the tape measure to estimate how much shielded wire will need to run from the switch box to the main switch box or other junction box where it will be installed. 

If you are going to run the shielded cable through studs or walls, it is probably best to simply run the cable from one point to another before cutting the shielded cable.

(Tip: If you want to save some time and effort, you can also insert your electrical wiring into the shielded wire at this point.

This will help you avoid having to use duct tape after you’ve installed the shielded wire. .)

Step 3: cut and trim the shielded cable

Once you have the shielded cable in position, use the hacksaw or shielded cable cutter to cut the cable. 

If you are using a hacksaw, cut the wire at an angle of about 60 degrees. 

Also, allow an additional 8 to 10-inch shielded cable on each end so that you have enough to work with when you connect it to the junction box. 

Next, trim the steel jacket from the end of the armored cable to expose the bushing papers. Remove about 1 inch of the paper from the bushing where the wire will pass.

Step 4 – Install the anti-short sleeve

Place an anti-short sleeve at the end of the cable where the shielded cable will meet the cable inside the junction box. Next, use your fingers to bend the tie strip on the bushing.

Step 5 – Connect the shielded cable connector

Use a clamp or set screw to connect the connector to the end of the shielded cable.

Step 6 – Connect the cable to the junction box

Feed the connector at the end of the shielded car cable into the empty pull-out tab in the junction box.

 Next, pass the wiring through the lockwasher and begin turning it towards the connector in a clockwise direction. 

Once the lock washer is hand tight, use a hammer and flat head screwdriver to tap the lock washer gently and tighten it firmly. 

You can now connect the shielded cable wiring to the one in the junction box, or you can use masking tape to run the wiring through the cable.

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