Guidelines for Electrical Works – I

These guide lines are based on the practical experience which we gained from construction sites. This will be helpful for any young aspirant/ electrical supervisor who want to get a clear idea about what’s happening in live sites. Ensure the location of Electrical duct, Electrical switch room and Diesel Generator set. Enquire about the rating…

How To Choose a Diesel Generator ?

Do I need a genset for stand-by or prime power? Organisations and residences may need a generator for one of the following reasons: a)Grid-based electricity or mains electricity is not available b)Power from the mains supply is not enough to meet power needs c)Protection is needed against the possibility of periodic or sustained loss of…

DUCT DESIGNING

The chief requirements of an air conditioning duct system are: It should convey specified rates of air flow to prescribed locations It should be economical in combined initial cost, fan operating cost and cost of building space It should not transmit or generate objectionable noise Generally at the time of designing an air conditioning duct…

Types of HVAC Systems

There are several choices for the type of air conditioning systems, each satisfying the HVAC objectives with different degrees of success. Broadly the air conditioning system can be classified in two broad categories: 1) Centralized air conditioning systems 2) Decentralized systems. Central air conditioning systems serve multiple spaces from one base location. These           typically use…

Switch Disconnectors/Fuse Unit Selection

Most contractors make a common error in selecting the Switch Fuse Units (SFU) and HRC fuse links. Switchgears like SFUs should be selected according to the cable connected to feed the load. Switchgears are intended to protect the cable. By protecting the cable you protect the device from damage and save lives as well. For…

FACTORS EFFECTING LIGHTING DESIGN

Most of the design engineers only use the design softwares and not much bothered about the other factors effecting lighting design. This post is intended to point out the various factors effecting lighting design. The illumination is measured at the working surface which is an imaginary horizontal plane 85 cm above the floor level. The…

9 Important points to check in lighting design:

Important Points to be Noted During Lighting Design Light fittings like wall light, tube fittings, ceiling lights etc. should be symmetrically arranged and positioned in a manner that avoids dark spots and shadows in the room. If wall lights and tube fittings are considered for a room, ensure the fixtures are positioned on adjacent walls.…