| Item | Feature | Brand A |
Brand B |
| 1 | Interlock between main and generator breaker | NOT functional with cover removed | functional even with cover removed |
| 2 | Enclosure types available | indoor & outdoor | indoor & outdoor |
| 3 | Door/cover? (to protect breakers) | No (indoor units) Yes (outdoor units) |
Yes, standard |
| 4 | Branch breaker space | 8 full height breakers or 16 half-height breakers |
12 full height breakers
or 20 half&full height breakers |
| 5 | Branch breakers provided & installed | Yes, single selection of pole & amp ratings | with or without (at cost savings) 9 combinations of pole & amp ratings to choose from |
| 6 | Branch breakers factory wired? | No | Yes |
| 7 | Watt meters | direct connected | indirect connected (via CTs) for better accuracy |
| 8 | Service entrance rated? (allows wiring directly downstream of electric meter without extra disconnect) | No | Yes |
| 9 | Surface & flush mountable? | Yes | Yes |
| 10 | Mountable between standard 16" stud centers? | Yes (14.37"W x 11.5"H x 3.37"D) |
Yes (14.5"W x 21"H x 4"D) |
| 11 | Male inlet for generator cord? | Yes, standard | with or without (at cost savings) |
| 12 | Generator cord inlet usable when flush mounted? | No (top mounted) | Yes (front mounted) |
| 13 | Flex conduit type provided | plastic standard (metal options) |
metal standard |
| 14 | Cost | comparable with
branch breakers factory installed |
|
