Any sort of work which includes an exposure to electrical circuits and equipment involves its own set of risks. Particularly, electricians are exposed to these hazards on a regular basis. We commonly know that electric shock is the only danger electricians are exposed to, but little do we know that electric arc explosion is an equally perilous threat, which can generate blistering heat called arc flash that can cause lethal injuries. read more
It’s not uncommon for home and business owners to contact an electrician when they are having electrical problems in their home. From electrical sockets causing shortages to replacing old light fixtures, there are a number of issues that people may need to be addressed.
Though each problem may be different, there are some common concerns that electricians and anyone who assists them must be familiar with and that is taking the appropriate safety measure to avoid unnecessary risks and injuries. That being said, here’s several safety precautions that must be taken to keep everyone safe. Read More
This post I would like to share video how to disconnect or dis-engage THOMAS Coupling from motor hub during maintenance works.In this video,technician plan to replace new bearing for the motor due to abnormal sound detected from bearing.Normally in industry or chemical plant,Thomas Coupling is the one of common application to connect electric motor as a drive and pump as a rotary equipment for the process.
The main reason why Thomas coupling are used :-
- To transmit power from one shaft to another, efficiently and effectively.
- To accommodate slight shaft misalignment which develop in service.
Thomas coupling application also can protect our equipment from mechanical damage and misalignment. Below several protection when using Thomas coupling :-
1. Absorb shock, vibration and pulsations.
2. Decrease cross load on bearings.
3. Accept load reversals.
4. Minimize backlash. Read More
Circuit protection is a mandatory items that we MUST consider carefully for Electrical Installation project.I will take a fully attention during sizing and follow standard requirement for circuit breaker.
If the circuit protection not function properly, it’s can cause a serious damage to equipment and personnel.On my last post,I had discussed about Circuit Breaker Sizing.
This time I want to share some information about general requirement for circuit breaker that commonly apply for Electrical Installation project.I hope this post can help to have a basic guideline during handle any project of electrical installation. read more
The answer must be “yes” .The centrifugal pumps in the pictures are all water pumps which exploded. The explosions did not occur because of any contamination or chemical reaction with something that was not supposed to be in the pump.
In fact, explosions like this have happened with very pure water – boiler feed water pumps, condensate pumps, and de-ionized water pumps. read more
Earthing system is one of the important items for electrical installation used in domestic or industrial sector.This is for electrical safety purpose when current leakage happen.
With proper grounding system,people are protected from electrical shock and also to ensure residual current devices (RCD) or Ground Fault device (GFCI) activate properly.
Intentional grounding is required for the safe operation of electrical systems and equipment. Unintentional or accidental grounding is considered a fault in electrical wiring systems or circuits. read more
The main purpose of this 16 steps is to look at the systematic and proper work sequence on disconnecting the wiring,check the motor nameplate, specification when replacing the motor until complete the task.
I would like to share my routine standard procedure for replacing a new motor.I created this procedure follow the safety guideline and reference from my experience in electrical motor installation.It have 16 steps that can ensure the installation jobs will done in safety and proper way to contribute the quality of works.
I hope this procedure can give some basic reference and guideline for all of you how to change a new motor.Please share a comment or suggestion to improve this procedure. read more