Generator Breaker Interlock Vs Transfer Switch

Generator transfer switch vs.

Generator breaker interlock vs transfer switch.

I was also told by a large generator retailer that an interlock kit does not meet nfpa 37 or nfpa 70 for proper connection of generators to residential electrical systems so i m leaning towards the transfer switch but am curious why several highly rated on angie s list electricians are pushing. July 30 2015 05 45 28 pm most houses in the houston area are using 18 22kw units for whole house installs. A transfer switch although limited to a particular number of circuits is safer to use than an interlock kit. The main breaker and all other breakers must be turned off the interlock switch is set to generator and then the generator is engaged.

In residential or light commercial use the interlock switch is moved from the main power breaker to the generator breaker when the utility power goes out. They require someone on site with proper training to operate the interlock switch and engage the generator power. This option the generator would be parked somewhere near the back of the property near the garage and i would be installing the above ground 250 propane tank near there. It ensures that the power is flowing in the electrical panel in only one way.

A generator interlock kit involves training and an understanding of the buildings electrical system for safe use. Reply 24 on. The panel with all the house switches is located in the garage while the main house breaker with the a c switches is located on the side. This effectively blocks the main power circuit breaker turning it off.

An interlock is manually operated. Unlike a transfer switch an interlock kit allows you to provide power to anything in your home since it isn t just limited to 6 8 circuit breakers. When you use an interlock kit all of your panel s circuits can be energized up to the load capacity of the generator. A generator interlock kit is similar to a transfer switch in that it is a device that allows you to power on your generator through your home s electrical wiring system.

Transfer switches also need an entirely separate panel in order to operate while interlock kits can be installed directly on your home s breaker panel so you don t have to have another piece of bulky equipment in your home. Interlock vs transfer switch.