Page last updated Oct 20, 2021 @ 10:12pm
Help - Which Type Manual Switch is Best?
There are four basic types of manual transfer switches available for connecting a backup power source or generator to a building wiring system. With each there are advantages and limitations. Use the table below to help determine which is best suited to your application.
Description (click for catalog listing) |
Load-side Multi-Circuit Transfer Switch | Single-Circuit Transfer Switch | Transfer Panel installed as a Sub-Panel | Transfer Panel installed as a Main Panel |
Sample Images | ||||
Installation Arrangements (click images to enlarge) |
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Maximum number of branch circuits | 4, 6, 8 or 10 branch circuits | Switches 1 main circuit, as many branch circuits that can fit in downstream panel |
6 to 16 branch circuits depending on model | 36 branch circuits |
Maximum rating of each branch circuit | 15A or 20A (Q-series 30A) |
200A, 400A or larger main, branch circuit rating limited only by panel (usually 100A max) |
varies depending on model, some limited to 30A, others can accommodate up to 100A | 100A |
Individual control of each circuit allowing some to operate on generator and others on utility? | Yes | No | No | No |
Generator Meters? | Included on most models | Included on some models | Included on most models | Included on most models |
Branch breakers freed up in existing load center panel? | No | No | Yes | --- |
Additional double-pole branch breaker required in existing load center panel? | No | No | Yes (not included) |
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Ease of installation? | Easy | Difficult | Medium | Very Difficult (unless new construction) |
Installation Remarks |
- connect flex conduit to |
- pull electric meter if no |
- purchase double-pole |
- disconnect all wiring |
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