What does a manual transfer switch do

In simple terms, a transfer switch is a permanent switch that connects to your power box that changes the power load between two sources. For permanent sources of backup power, this happens automatically when the first source of power becomes unavailable. This is ideal because it seamlessly keeps the energy flowing with minimal delay. The transfer switch of a generator has evolved in recent years. The transfer switches that are installed in manufacturing facilities are now called 'smart switches' as a constant flow of data regarding the facility's power consumption and supply demands are closely monitored for a seamless transfer of power when backup power is needed. A transfer switch allows you to power any of those—and skip the extension cords. Plan on a cost of $500 to $1,500 for the switch, including installation, which usually takes less than a day. And Put somewhat simply, a transfer switch, whether automatic or manual, provides fast access to your generator power when working in conjunction with a tap box. When not using a transfer switch, you must manually connect your generator directly to the functions you wish to power during an outage—a time consuming and inefficient solution. A manual transfer switch enables you to connect the generator to the circuit breaker panel and choose which circuits you are going to use while the main power source is out. You will be able to use all appliances that are on the circuit you switched on so that you can power only the devices that are essential to you during an emergency. During power transitions, transfer switch timing and sequence is critical to ensure proper system operation. Consulting engineers must understand transfer switch types, timing requirements, ratings, and the types of standby systems where transfer switches are used to transfer to backup power. The basis of this article is NFPA 70-2014: National Manual Transfer Switch. Automatic Transfer Switch. Closed Transition Switching / 'bump-less' Switching. Soft Transfer Application. Please note the operations following should only be undertaken by suitably trained and experienced technicians and an engineered solution should be designed with interlocks to prevent unsafe situations. Once the power goes out, the switch will disconnect the building from one source of power (utility) then make the connection to the generator. The transfer switch is mechanically interlocked making it impossible to connect the building to both the generator and utility at the same time. This is the same concept for both manual and automatic Connecting Portable Generators. There are three components used to hook up a portable generator with a home's main breaker: a manual transfer switch, a power cord, and a power inlet box (in many cases). The manual transfer switch's amperage should match that of the largest outlet of your portable generator. The power cord and power inlet box A manual transfer switch must be actuated by the homeowner. After having ascertained that the electric utility outage is more than a momentary loss of power, the homeowner must manually start the engine, allow it to come up to speed and stabilize, and then throw the lever on the transfer switch into the generator position. Fig. 1. Note that in practice, what is advertised as a manual transfer switch is actually a system that comprises of two double-pole switches and a mechanical locking mechanism. You will nee