Library

In order to help you with your power distribution needs, we have put together this library of information.  If you can’t find the information you are looking for, have additional questions, or need help deciding which of our products is right for your application, call 800-472-1158.

Our mission is to make reliability a
reality, by providing the highest quality portable electrical products…

I can't find exactly what I need. Can Power Temp Systems design and build something custom?

YES!  We have been building custom products since 1991.  Our team of engineers can review your goals and/or specifications and design a product to meet your exact needs.  Contact us to start the conversation.

Does Power Temp Systems offer completed cable assemblies?

Yes.  We offer all types of portable power cable assemblies available for immediate shipment in both Type W (portable power) & Type SC (entertainment – stage & lighting), with a wide variety of plugs / connectors that are ready to install when you need it.

What is the difference between Type W Portable Power Cable and Welding Cable?

“Type W” Portable Power Cable is recognized by the National Electric Code (NEC) as being acceptable for hard or extra hard usage and is permitted for use in Temporary Wiring applications, “Welding Cable” is not. We recommend using only UL Listed “Type W” for all Temporary Wiring applications because it is more durable and is approved for a greater range of applications. We can supply this type of cable in any length and with various connectors.

Is all "Type W" Portable Power Cable "UL Listed"?

No. There are versions of “Type W” Portable Power Cable available that is not UL Listed, and thus is not permitted for Temporary Wiring applications. We use only “UL Listed” cable in all assemblies, regardless of size or type.

What is a Ground-Fault Circuit Interrupter (GFCI)?

A GFCI is a fast-acting circuit breaker that senses small imbalances in the circuit caused by current leakage to ground and, in a fraction of a second, shuts of the electricity. The GFCI continually matches the amount of current going to an electrical device against the amount of current returning from the device along the electrical path. Whenever the amount “going” differs from the amount “returning” by approximately 5 milliamps, the GFCI interrupts the electric power within as little as 1/40 of a second.

The GFCI, however does not protect from line-to-line contact hazards (such as a worker holding two “hot” wires or a hot and a neutral wire in each hand). It does protect against the most common form of electrical shock hazard – the ground fault, and it also protects against fires, overheating, and destruction of insulation on wiring.

What is a trapped key interlock? (TKI)

Trapped key interlocks (TKI’s) are locks and keys for sequential control of equipment and machinery to ensure safe operation. A safe sequence of operations is enabled through transfer of keys that are either trapped or released in a predetermined order. For example, a key is used to isolate a power source (circuit breaker or supply valve), this key is then released and can then be used to gain access through a gate or door to a high risk area by inserting it into an access lock. The key will then remain trapped until the gate or door is closed. A personnel or safety key can be released from the access lock, this ensures that the gate or door can not be closed and the initial key released until this personnel or safety key is returned. This provides increased operator safety.

Watch this video for more information.

What is a phase rotation monitor?

A phase rotation monitor is used to confirm the correct electrical phase rotation to match the existing service, eliminating the likelihood of running any three phase motors backwards and damaging equipment or processes.

Why are load bank connections important?

Load bank connections are important because they allow for the quick, safe, and economical load bank testing of generators on scheduled basis.  They eliminate the need to disconnect permanent wiring and reduce the time required to service the generator.

What are some optional switching methods for portable backup generators?

  1. Using the existing service disconnect in conjunction with a trapped key interlock.
  2. Double throw manual transfer switch.
  3. Automatic manual transfer switch.

How can I use my existing switch or disconnect to hookup a portable backup generator?

The safest way to hookup a portable backup generator with an existing switch or disconnect is to use a trapped key interlock.

Single Conductor – A single (1) insulated wire.

Multi-Conductor – Multiple insulated wires grouped together and insulated as a single cable.

Banded Set – Single conductors banded together to form a multi-conductor cable set.

Type “W” – Portable power and lighting in industrial, mining and entertainment applications.

Type “SC” – Portable power and lighting applications in the entertainment industry including motion picture, television, theaters, stages and similar locations.

Type “SOOW” – Portable power and lighting in the industrial and entertainment applications.

I-Line – Modular breaker system for easy breaker exchange from 15A to 1200A.

Trapped Key Interlock (TKI) – A system of two or more locks with special keys that are trapped in a lock until a specific task has been done.  I.e. a main breaker is turned off or a door is closed to release the key and allow the next process or step.

3 Phase Load Calculator

Generator KVA/KW/Amperage/Cable Use Chart

Questions to ask your generator rental customers.

Quick Connect Docking Panel Training

Power Distribution Systems Training