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Written from the listing's specs, not from our own use · How we rate
The Connecticut Electric EGSPI50 50A Inlet ticks most of the boxes we care about: a 50 amp inlet (CS6375) and a weatherproof cover. A good match for a proper hookup to the house panel, rated 7.0/10 on its documented specs.
| Brand | Connecticut Electric |
|---|---|
| Category | Covers, cords & accessories |
| Amp rating | 50 A |
| Plugs and connectors | CS6375, SS2-50P |
| ASIN | B005M1PZKW |
Full listing title: Connecticut Electric EGSPI50 50A Rainproof Generator Power Inlet Box with Cover, CS6375, SS2-50P, Receptacle, Gray
Rated from the listing's specs, no buyer reviews yet
What it's made for: a proper hookup to the house panel.
Two power inlet boxes with the same amp rating, closest to it on our rating, each with a dated price.
The rating the listing states. It has to match the cord and the biggest outlet on your generator: a 30 amp inlet won't pass a 50 amp generator's full output.
What it has going for it
50 A inlet, CS6375. The weatherproof socket on the outside wall where the generator cord plugs in. An electrician wires it to a transfer switch or an interlock, and you never backfeed through a dryer outlet.
Weatherproof box. It lives on the outside wall all year, so the cover and its rating (NEMA 3R where stated) matter.
The Connecticut Electric EGSPI50 50A Inlet is the socket on the outside wall, rated 50 A with a CS6375 inlet, per the listing. Indoors it feeds either an interlock kit on the main panel or a manual transfer switch.
An interlock is cheaper and leaves every breaker available; you manage the load yourself. A transfer switch puts a set list of circuits on the generator, which is simpler on the night. Either way, a licensed electrician wires it.
What the Connecticut Electric EGSPI50 50A Inlet listing names:
Check these figures against your generator's manual before you order.
On Sep 30, 2026, that price put it in the pricier third of the 11 power inlet boxes we have a recent price for.
Count the electrician and, where your town asks for one, the permit on top: the hardware is the cheap part.
The button opens the exact listing (ASIN B005M1PZKW), where today's price, stock and seller apply.
Want to spend less? The RVMATE 50A SS2-50P Inlet Box (7.3/10) was listed at $29.77 on Sep 30, 2026.
Our take
We like the Connecticut Electric EGSPI50 50A Inlet for a 50 amp inlet (CS6375) and a weatherproof cover. No buyer reviews yet, so this Connecticut Electric power inlet box has to win you over on paper. The catch with the Connecticut Electric: one wrong plug code and nothing connects, so check both ends first. We'd pick it if you want a clean, legal hookup to the panel; otherwise, put it next to the Connecticut Electric 30A Inlet Box first.
Before the Connecticut Electric EGSPI50 50A Inlet ships, check the plug code: it takes CS6375, and the cord and the generator outlet have to match.
This one uses CS6375 and SS2-50P. Read the outlet code on your generator panel and the inlet box (L14-30, L5-30, 14-50, SS2-50, TT-30); they are not interchangeable.
An inlet box connects to a transfer switch or an interlock, wired by a licensed electrician. Our interlock vs transfer switch guide compares both.
It is rated 50 A. The cord, the inlet and the switch should all carry the same rating as the generator outlet you use.
How the Connecticut Electric EGSPI50 50A Inlet stacks up against the closest alternative, the Connecticut Electric 30A Inlet Box.
| Criterion | Connecticut Electric EGSPI50 50A Inlet | Connecticut Electric 30A Inlet Box |
|---|---|---|
| Our rating | 7.0/10 | 7.0/10 |
| Rating | 50 A | 30 A |
| Plug | CS6375 | Not stated |
Both score 7.0/10. Compare the listings side by side to choose.
We rate it 7.0/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
Only if your generator manual confirms it. Check the outlet or plug type, the amperage, the list of supported models and any adapter the manual asks for; looking similar is no proof that it fits.
Its listing states a 50 amp inlet (CS6375) and a weatherproof cover. These are the seller's figures, not our measurements: whether it fits your exact generator is worth confirming first.
Match the plugs: this one uses CS6375 and SS2-50P. Read the outlet code on your generator panel and the inlet box (L14-30, L5-30, 14-50, SS2-50, TT-30); they are not interchangeable. Plan the install: an inlet box connects to a transfer switch or an interlock, wired by a licensed electrician. Our interlock vs transfer switch guide compares both. The amp rating: it is rated 50 A. The cord, the inlet and the switch should all carry the same rating as the generator outlet you use.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula, plus our editors' read of how it compares with its rivals.