Diagnostics

Circuit Tracing

Need to find a concealed circuit, device or junction box? Can’t find the wire you’re looking for? We offer circuit tracing services with our specialized equipment that is capable of finding circuits up to 3 feet behind walls or below ground. Save time and money by using the right tools for the job when you hire NSC Electric Inc.

Insulation Testing

The following is an excerpt from EC&M on what insulation testing is and what it can do for you.

What is insulation resistance testing?

Basically, you’re applying a voltage (specifically a highly regulated, stabilized DC voltage) across a dielectric, measuring the amount of current flowing through that dielectric, and then calculating (using Ohm’s Law) a resistance measurement. Let’s clarify our use of the term “current.” We’re talking about leakage current. The resistance measurement is in megohms. You use this resistance measurement to evaluate insulation integrity.

Current flow through a dielectric may seem somewhat contradictory, but remember, no electrical insulation is perfect. So, some current will flow.

What’s the purpose of insulation resistance testing?

You can use it as:

• A quality control measure at the time a piece of electrical equipment is produced;
• An installation requirement to help ensure specifications are met and to verify proper hookup;
• A periodic preventive maintenance task; and
• A troubleshooting tool.

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Thermal Imaging

Thermal imaging is a method of using infrared radiation and thermal energy to gather information about objects, in order to formulate images of them, even in low visibility environments. It’s a type of technology that has built up a broad range of uses over the years. In particular, it’s an effective form of night-vision technology, with the capability to work in the total absence of any light (since it doesn’t rely on visible light), and can even work in smoke, fog, smog and haze.

How does thermal imaging work?

Thermal imaging is based upon the science of infrared energy (otherwise known as “heat”), which is emitted from all objects. This energy from an object is also referred to as the “heat signature”, and the quantity of radiation emitted tends to be proportional to the overall heat of the object.

Thermal cameras or thermal imagers are sophisticated devices comprised of a sensitive heat sensor with the capacity to pick up minute differences in temperature. As they gather the infrared radiation from objects in a particular environment, they can start to map out an image based on the differences and inflexions of the temperature measurements.

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